Changes for cloning

lib/data/models/expense_model.dart

@@ -143,6 +143,7 @@ abstract class ExpenseEntity extends Object
 
   ExpenseEntity get clone => rebuild((b) => b
     ..id = BaseEntity.nextId
+    ..number = ''
     ..isChanged = false
     ..isDeleted = false
     ..invoiceId = null

lib/data/models/project_model.dart

@@ -100,6 +100,7 @@ abstract class ProjectEntity extends Object
 
   ProjectEntity get clone => rebuild((b) => b
     ..id = BaseEntity.nextId
+    ..number = ''
     ..isChanged = false
     ..isDeleted = false);
 

lib/data/models/vendor_model.dart

@@ -120,6 +120,7 @@ abstract class VendorEntity extends Object
 
   VendorEntity get clone => rebuild((b) => b
     ..id = BaseEntity.nextId
+    ..number = ''
     ..isChanged = false
     ..isDeleted = false);