[FIX] don't remove computed fields with inverse method of the onchange values

onchange_helper/models/base.py

@@ -64,6 +64,6 @@ class Base(models.AbstractModel):
         return {
             f: v
             for f, v in all_values.items()
-            if not self._fields[f].compute
+            if not (self._fields[f].compute and not self._fields[f].inverse)
             and (f in values or f in new_values or f in onchange_fields)
         }