Thanks for the report. This has already been fixed for the next version.
Starting from the next version (both NC and FC), there is no longer a child asset created along with the prefab, exactly so that this problem can be avoided. I can send you the new version before it hits the asset store if you like (just drop me an email to support_AT_paradoxnotion.com).
Regarding zooming, can you please provide a bit more information or a screenshot/gif/video, showcasing the problem. What do you mean by changing their positions?
Gavalakis
