diff --git a/system/scripts/actors/base-sheet.js b/system/scripts/actors/base-sheet.js
index 9bb7230..e91784e 100644
--- a/system/scripts/actors/base-sheet.js
+++ b/system/scripts/actors/base-sheet.js
@@ -203,22 +203,7 @@ export class BaseSheetL5r5e extends ActorSheet {
 
         // Item subtype specific
         switch (item.data.type) {
-            case "bond": // no break
-            case "peculiarity": // no break
-            case "item_pattern": // no break
-            case "signature_scroll":
-                // Modify the bought at rank to the current actor rank
-                if (this.actor.data.data.identity?.school_rank) {
-                    item.data.data.bought_at_rank = this.actor.data.data.identity.school_rank;
-                }
-                break;
-
             case "advancement":
-                // Modify the bought at rank to the current actor rank
-                if (this.actor.data.data.identity?.school_rank) {
-                    item.data.data.bought_at_rank = this.actor.data.data.identity.school_rank;
-                }
-
                 // Specific advancements, remove 1 to selected ring/skill
                 await this.actor.addBonus(item);
                 break;
@@ -265,21 +250,21 @@ export class BaseSheetL5r5e extends ActorSheet {
                         item.data.data.xp_cost > 0 ? item.data.data.xp_cost : CONFIG.l5r5e.xp.techniqueCost;
                     item.data.data.xp_used = item.data.data.xp_cost;
                 }
-
-                // Modify the bought at rank to the current actor rank
-                if (this.actor.data.data.identity?.school_rank) {
-                    item.data.data.bought_at_rank = this.actor.data.data.identity.school_rank;
-                }
                 break;
         }
 
+        // Modify the bought at rank to the current actor rank
+        if (item.data.data.bought_at_rank !== undefined && this.actor.data.data.identity?.school_rank) {
+            item.data.data.bought_at_rank = this.actor.data.data.identity.school_rank;
+        }
+
         // Ok add item - Foundry override cause props
         const allowed = Hooks.call("dropActorSheetData", this.actor, this, item);
         if (allowed === false) {
             return;
         }
 
-        return this._onDropItemCreate(item.data.toJSON());
+        return this._onDropItemCreate(item.data.toObject(false));
     }
 
     /**
diff --git a/system/system.json b/system/system.json
index cc2a426..32706d7 100644
--- a/system/system.json
+++ b/system/system.json
@@ -4,8 +4,8 @@
     "description": "This is an authorised multilingual game system En|Fr|Es, for Legend of the Five Rings (5th Edition) by <a href='https://edge-studio.net/'>Edge Studio</a> <p> - Join the official Discord server: <a href='https://discord.gg/foundryvtt'> Official Discord</a></p><p> - Rejoignez la communauté Francophone: <a href='https://discord.gg/pPSDNJk'>Francophone Discord</a></p>",
     "url": "https://gitlab.com/teaml5r/l5r5e",
     "manifest": "https://gitlab.com/teaml5r/l5r5e/-/raw/master/system/system.json",
-    "download": "https://gitlab.com/teaml5r/l5r5e/-/jobs/artifacts/v1.3.0/raw/l5r5e.zip?job=build",
-    "version": "1.3.0",
+    "download": "https://gitlab.com/teaml5r/l5r5e/-/jobs/artifacts/v1.3.1/raw/l5r5e.zip?job=build",
+    "version": "1.3.1",
     "minimumCoreVersion": "0.8.5",
     "compatibleCoreVersion": "0.8.6",
     "manifestPlusVersion": "1.0.0",