Problem with multi nested List of configuraiton.

The following porblem has been discovered by one of our teammates. Consider the following issue.

• Config A has a list of objects let's call B, where B is an array of objects, whereeach object in B is a label and list of objects let's call it C.

• Create for each item in B, a list of items then save.

• Try to update the label in any item in B, as a result each sublist under each object in B, will be deleted as a result.
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  *The problem is i found it in code, you delete all items in the first level, and as a result in the second level.