Are you any closer to finding the problem?

I've found that doing Cut and then Paste has not yet presented the error, whereas just doing a Copy does.

I've setup a Macro which does this, added it to the Macro Menu and moved the Ctrl+C keyboard shortcut to run this macro instead.

I'll let you know if I have problems with that ... but I'd better make sure Ctrl+Z works well if it does go awry :-).