Description: When updating the product module, if the "Service"
product.product has been deleted, but not the corresponding
"product.template" part, the update will crash on a "duplicate xml id"
error.
This commit fixes the bug by :
- Adding the link to existing inherited model xml id in values
- Avoid creating the duplicated XML ID
If the XML ID is found, but orphan, it's simply deleted.
Closes#8966
opw-658454
80b373f1e5