diff --git a/web/modules/custom/figli_compta_ledger/figli_compta_ledger.routing.yml b/web/modules/custom/figli_compta_ledger/figli_compta_ledger.routing.yml
index c6ce5c1..26a8207 100644
--- a/web/modules/custom/figli_compta_ledger/figli_compta_ledger.routing.yml
+++ b/web/modules/custom/figli_compta_ledger/figli_compta_ledger.routing.yml
@@ -55,6 +55,17 @@ figli_compta_ledger.api_reconciliation_ouverture:
   requirements:
     _permission: 'access content'
 
+figli_compta_ledger.api_groupe_entree:
+  path: '/lignes/api/groupe/{node}'
+  defaults:
+    _controller: '\Drupal\figli_compta_ledger\Controller\LedgerStatsController::groupeEntree'
+  requirements:
+    _permission: 'access content'
+  options:
+    parameters:
+      node:
+        type: entity:node
+
 figli_compta_ledger.api_dashboard_stats:
   path: '/dashboard/api/stats'
   defaults:
diff --git a/web/modules/custom/figli_compta_ledger/js/home.js b/web/modules/custom/figli_compta_ledger/js/home.js
index 6373a86..e3ba48e 100644
--- a/web/modules/custom/figli_compta_ledger/js/home.js
+++ b/web/modules/custom/figli_compta_ledger/js/home.js
@@ -123,6 +123,31 @@
     return { data: dedup, includedMap };
   }
 
+  // GET /lignes/api/groupe/{nid} -- the full transitive closure of node
+  // ids connected via field_entree_liee (both directions), resolved
+  // server-side since the sliding window can't discover it client-side
+  // (see LedgerStatsController::groupeEntree()).
+  async function fetchGroupeIds(nid) {
+    const res = await fetch('/lignes/api/groupe/' + nid, { headers: { Accept: 'application/json' } });
+    if (!res.ok) throw new Error('/lignes/api/groupe a répondu ' + res.status);
+    const json = await res.json();
+    return json.nids || [];
+  }
+
+  // Fetches full ligne data (same includes as the sliding window) for a
+  // specific set of node ids, regardless of date -- used to fill in
+  // whichever entrée/sortie nodes fetchGroupeIds() found that aren't in
+  // the currently loaded window.
+  async function fetchLignesByNids(nids) {
+    if (!nids.length) return { data: [], includedMap: new Map() };
+    const params = new URLSearchParams();
+    params.set('include', 'field_repartition,field_repartition.field_compte,field_client,field_entree_liee');
+    params.set('filter[parNid][condition][path]', 'drupal_internal__nid');
+    params.set('filter[parNid][condition][operator]', 'IN');
+    nids.forEach((nid) => params.append('filter[parNid][condition][value][]', nid));
+    return fetchLignes(API_BASE + '?' + params.toString());
+  }
+
   async function fetchClientNames() {
     // page[limit]=200 is silently clamped to core's hard cap of 50 by
     // JSON:API (Query\OffsetPage::SIZE_MAX) -- with 106 client terms,
@@ -290,6 +315,14 @@
         onlyErrors: false,
         hoverCol: null,
         filterEntreeId: null,
+        // Rows fetched to fill in entrées/sorties that /lignes/api/groupe
+        // found but the sliding window doesn't have loaded (a versement
+        // can link to an entrée from any prior year) -- see
+        // allKnownRows()/toggleEntreeFilter(). Kept around (not cleared
+        // on close) as a soft cache: reopening the same or an overlapping
+        // group doesn't need to re-fetch.
+        groupExtraRows: [],
+        groupLoading: false,
         // Which row's type badge is currently showing its inline <select>
         // instead of the badge -- only one at a time.
         editingTypeId: null,
@@ -323,11 +356,23 @@
       errorCount() {
         return this.rows.filter((r) => r.hasError).length;
       },
+      // Every row known locally that could feed the reconciliation/
+      // drill-down computeds below: the loaded sliding window, plus
+      // whatever groupExtraRows filled in (see toggleEntreeFilter()) --
+      // deduped by id in case the same node ends up in both. A versement
+      // can link to (or be linked from) an entrée dated years earlier or
+      // later, well outside `rows`; groupExtraRows is how that gap gets
+      // closed once the full group has been resolved server-side.
+      allKnownRows() {
+        if (!this.groupExtraRows.length) return this.rows;
+        const seen = new Set(this.rows.map((r) => r.id));
+        return [...this.rows, ...this.groupExtraRows.filter((r) => !seen.has(r.id))];
+      },
       // A sortie linked to several entrées (one payment covering several
       // invoices) appears under each of them here.
       sortiesByEntree() {
         const map = new Map();
-        for (const r of this.rows) {
+        for (const r of this.allKnownRows) {
           for (const entreeId of r.entreeLieeIds) {
             if (!map.has(entreeId)) map.set(entreeId, []);
             map.get(entreeId).push(r);
@@ -342,9 +387,11 @@
       // positive means still owed ("reste à verser"); negative means more
       // was paid out than the entrée allocated ("sur-versé", worth a
       // closer look). Precomputed once for all entrée rows rather than
-      // recomputed per template read. Limited to the currently loaded
-      // window -- a sortie linked to an entrée outside it won't be
-      // counted (accepted trade-off of the sliding window).
+      // recomputed per template read. Only sees whatever sortiesByEntree
+      // knows about -- accurate for an entrée once its full group has
+      // been resolved (see allKnownRows()/toggleEntreeFilter()), but may
+      // under-count a sortie linked to it that's neither in the loaded
+      // window nor already fetched into groupExtraRows.
       //
       // A sortie linked to several entrées at once (one payment covering
       // several invoices) has no record of how much of it applies to
@@ -355,7 +402,7 @@
       // the same money).
       reconciliationByEntree() {
         const map = new Map();
-        for (const entreeRow of this.rows) {
+        for (const entreeRow of this.allKnownRows) {
           if (entreeRow.type !== 'entree') continue;
           const linked = this.sortiesByEntree.get(entreeRow.id) || [];
           const versementsParCompte = {};
@@ -398,13 +445,19 @@
       // so drilling into one entrée should also surface every *other*
       // entrée it shares a sortie with, and that entrée's own sorties in
       // turn -- not just the originally-clicked entrée's direct links.
+      // Runs over allKnownRows (loaded window + groupExtraRows), not just
+      // `rows` -- toggleEntreeFilter() fetches the complete group up
+      // front via /lignes/api/groupe/{node}, so by the time this
+      // re-evaluates, every member should already be present regardless
+      // of its date.
       filterEntreeGroup() {
         if (!this.filterEntreeId) return null;
+        const pool = this.allKnownRows;
         const entreeIds = new Set([this.filterEntreeId]);
         let grown = true;
         while (grown) {
           grown = false;
-          for (const r of this.rows) {
+          for (const r of pool) {
             if (r.type === 'entree' || !r.entreeLieeIds.some((id) => entreeIds.has(id))) continue;
             for (const id of r.entreeLieeIds) {
               if (!entreeIds.has(id)) {
@@ -414,8 +467,8 @@
             }
           }
         }
-        const entrees = this.rows.filter((r) => r.type === 'entree' && entreeIds.has(r.id));
-        const sorties = this.rows.filter((r) => r.type !== 'entree' && r.entreeLieeIds.some((id) => entreeIds.has(id)));
+        const entrees = pool.filter((r) => r.type === 'entree' && entreeIds.has(r.id));
+        const sorties = pool.filter((r) => r.type !== 'entree' && r.entreeLieeIds.some((id) => entreeIds.has(id)));
         return [...entrees, ...sorties];
       },
       filteredRows() {
@@ -525,9 +578,15 @@
       //     equal-split note), each entrée's residual for these compte(s)
       //     counts separately -- they're independent invoices, each with
       //     its own outstanding amount.
-      //   - linked and settled (as far as the currently loaded window can
-      //     tell -- a linked entrée outside it is silently skipped, same
-      //     accepted trade-off as reconciliationByEntree itself)
+      //   - linked and settled
+      //   - inconnu: at least one linked entrée's reconciliation couldn't
+      //     be resolved (not yet fetched into groupExtraRows -- see
+      //     allKnownRows()/loadEntreeGroup()). Deliberately distinct from
+      //     "ok": defaulting an unresolved entrée to "settled" would show
+      //     a false all-clear for a versement that's actually fine, or
+      //     one that owes money, purely because its linked entrée hasn't
+      //     been fetched yet -- opening the badge resolves it and flips
+      //     the status to whatever it actually is.
       versementStatus(item) {
         if (item.type !== 'versement') return null;
         if (!item.entreeLieeIds.length) {
@@ -535,9 +594,13 @@
         }
         let resteAVerser = 0;
         let surVerse = 0;
+        let unresolved = false;
         for (const entreeId of item.entreeLieeIds) {
           const recon = this.reconciliationByEntree.get(entreeId);
-          if (!recon) continue;
+          if (!recon) {
+            unresolved = true;
+            continue;
+          }
           for (const c of Object.keys(item.parCompte)) {
             const residual = recon.parCompteResidual[c] || 0;
             if (residual > 0.01) resteAVerser += residual;
@@ -550,6 +613,9 @@
         if (surVerse > 0.01) {
           return { kind: 'sur-verse', detail: 'Sur-versé (comptes de cette ligne) : ' + this.formatEur(Math.round(surVerse * 100) / 100) };
         }
+        if (unresolved) {
+          return { kind: 'inconnu', detail: 'Entrée(s) liée(s) pas encore vérifiée(s) -- cliquer pour vérifier.' };
+        }
         const n = item.entreeLieeIds.length;
         return { kind: 'ok', detail: 'Lié à ' + n + ' entrée' + (n > 1 ? 's' : '') + ' client' + (n > 1 ? 's' : '') + '.' };
       },
@@ -557,16 +623,17 @@
         if (kind === 'non-liee') return 'Non liée';
         if (kind === 'reste') return 'Reste à verser';
         if (kind === 'sur-verse') return 'Sur-versé';
+        if (kind === 'inconnu') return 'À vérifier';
         return 'Lié';
       },
-      // Only non-liee/sur-versé read as a hard anomaly (red); reste is
-      // its own softer amber; ok gets neither, falling back to the
-      // badge's default green -- same "all clear" green the entrée side
-      // already uses for a fully-settled "N sorties liées".
+      // Only non-liee/sur-versé read as a hard anomaly (red); reste and
+      // inconnu are their own softer amber; ok gets neither, falling back
+      // to the badge's default green -- same "all clear" green the
+      // entrée side already uses for a fully-settled "N sorties liées".
       versementStatusClasses(kind) {
         return {
           'is-anomalie': kind === 'non-liee' || kind === 'sur-verse',
-          'is-reste': kind === 'reste',
+          'is-reste': kind === 'reste' || kind === 'inconnu',
         };
       },
       // jj/mm/aa -- shorter than the API's ISO yyyy-mm-dd, saves column
@@ -623,11 +690,43 @@
       // main table, so opening/closing it never touches the main table's
       // scroll position.
       toggleEntreeFilter(id) {
-        this.filterEntreeId = this.filterEntreeId === id ? null : id;
+        if (this.filterEntreeId === id) {
+          this.closeDrilldown();
+          return;
+        }
+        this.filterEntreeId = id;
+        this.loadEntreeGroup(id);
       },
       closeDrilldown() {
         this.filterEntreeId = null;
       },
+      // Resolves the full transitive-closure group for the given row id
+      // via /lignes/api/groupe/{nid} (the sliding window can't discover
+      // it client-side -- see LedgerStatsController::groupeEntree()), and
+      // fetches full ligne data for whatever member isn't already known
+      // locally, merging it into groupExtraRows. filterEntreeGroup/
+      // reconciliationByEntree re-evaluate automatically once that
+      // lands, since they read allKnownRows (rows + groupExtraRows).
+      async loadEntreeGroup(id) {
+        const row = this.allKnownRows.find((r) => r.id === id);
+        if (!row) return;
+        this.groupLoading = true;
+        try {
+          const nids = await fetchGroupeIds(row.nid);
+          const known = new Set(this.allKnownRows.map((r) => r.nid));
+          const missingNids = nids.filter((nid) => !known.has(nid));
+          if (missingNids.length) {
+            const { data, includedMap } = await fetchLignesByNids(missingNids);
+            const newRows = buildRows(data, includedMap);
+            const existingIds = new Set(this.groupExtraRows.map((r) => r.id));
+            this.groupExtraRows = [...this.groupExtraRows, ...newRows.filter((r) => !existingIds.has(r.id))];
+          }
+        } catch (err) {
+          this.typeUpdateError = err.message;
+        } finally {
+          this.groupLoading = false;
+        }
+      },
       startEditType(item) {
         this.typeUpdateError = null;
         this.editingTypeId = item.id;
diff --git a/web/modules/custom/figli_compta_ledger/src/Controller/LedgerStatsController.php b/web/modules/custom/figli_compta_ledger/src/Controller/LedgerStatsController.php
index c053a62..d5c2cc7 100644
--- a/web/modules/custom/figli_compta_ledger/src/Controller/LedgerStatsController.php
+++ b/web/modules/custom/figli_compta_ledger/src/Controller/LedgerStatsController.php
@@ -3,6 +3,7 @@
 namespace Drupal\figli_compta_ledger\Controller;
 
 use Drupal\Core\Controller\ControllerBase;
+use Drupal\node\NodeInterface;
 use Symfony\Component\HttpFoundation\JsonResponse;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -176,4 +177,51 @@ class LedgerStatsController extends ControllerBase {
     return new JsonResponse($result);
   }
 
+  /**
+   * GET /lignes/api/groupe/{node} -- the full transitive closure of
+   * entrée/sortie nodes connected via field_entree_liee, following links
+   * in *both* directions (this node's own field_entree_liee targets, and
+   * any other node that references it). The client's sliding window only
+   * ever holds a date-range slice of `rows` -- a versement can link to
+   * (or be linked from) an entrée dated years earlier or later, so
+   * finding the complete group from whatever happens to be loaded is not
+   * possible client-side; the reverse direction in particular ("which
+   * sorties reference this entrée") needs a real query, not a scan of
+   * already-loaded rows. Returns node ids only (not full ligne data) --
+   * the client re-fetches those specific ids via JSON:API, reusing its
+   * existing row-building/reconciliation code for the result.
+   */
+  public function groupeEntree(NodeInterface $node) {
+    $storage = $this->entityTypeManager()->getStorage('node');
+    $ids = [(int) $node->id() => TRUE];
+    $queue = [(int) $node->id()];
+    while ($queue) {
+      $current_id = array_shift($queue);
+      $current = $storage->load($current_id);
+      if (!$current || !$current->hasField('field_entree_liee')) {
+        continue;
+      }
+      foreach ($current->get('field_entree_liee')->referencedEntities() as $entree) {
+        $eid = (int) $entree->id();
+        if (!isset($ids[$eid])) {
+          $ids[$eid] = TRUE;
+          $queue[] = $eid;
+        }
+      }
+      $referencing = $storage->getQuery()
+        ->accessCheck(TRUE)
+        ->condition('type', 'ligne_comptable')
+        ->condition('field_entree_liee', $current_id)
+        ->execute();
+      foreach ($referencing as $nid) {
+        $nid = (int) $nid;
+        if (!isset($ids[$nid])) {
+          $ids[$nid] = TRUE;
+          $queue[] = $nid;
+        }
+      }
+    }
+    return new JsonResponse(['nids' => array_keys($ids)]);
+  }
+
 }
diff --git a/web/modules/custom/figli_compta_ledger/templates/figli-compta-home.html.twig b/web/modules/custom/figli_compta_ledger/templates/figli-compta-home.html.twig
index 7bca9ac..bc90ca2 100644
--- a/web/modules/custom/figli_compta_ledger/templates/figli-compta-home.html.twig
+++ b/web/modules/custom/figli_compta_ledger/templates/figli-compta-home.html.twig
@@ -196,7 +196,7 @@
   <div v-if="filterEntreeId" class="figli-modal-backdrop" @click.self="closeDrilldown">
     <div class="figli-modal">
       <div class="figli-modal-header">
-        <h3>Entrée + sorties liées</h3>
+        <h3>Entrée + sorties liées <span v-if="groupLoading" class="figli-note">vérification…</span></h3>
         <button type="button" class="figli-modal-close" @click="closeDrilldown">✕</button>
       </div>
       <div class="figli-modal-body">