Correct a bug: do not reset node childs if node has already defined childs, e.g. it is possible if loops are allowed.
Correct a bug: do not reset node childs if node has already defined childs, e.g. it is possible if loops are allowed.

vcgato29/Central,Metalaka/Central,Grummfy/Central,Metalaka/Central,vcgato29/Central,Grummfy/Central