Order lost when copying a parent

[brandonopened]

Bug Description: As an editor, when I copy a parent node from destination to origin, the order of the child statements becomes out of order on some frameworks.

Steps to reproduce:
Use the Copy tab to copy a parent with several child statements to an existing framework; on several frameworks the order becomes different.

where I'm keeping examples of this error
http://frameworks-staging.act.org/cftree/doc/1144

The origin framework is here - http://frameworks-staging.act.org/cftree/doc/1218

Problems so far noted with the HF Math Framework and the CCRS. I see Sequence Numbers on the IsChildOf associations in the JSON so am unsure why some frameworks copy ok and others don't.