uI use opengapps-aroma installer to get MS Exchange Account sync support (it requires also Gmail), but I usually skip all the other Google "goodies".
However, when I re-flash CM12.1, the gapps are lost. I can flash again also the gapps, but all my settings are lost.
It did not happen with CM11, since the update script took care about automatic backup & restore of gapps.
Does CM12.1 behave differently due to the different style of update process (no more file by file copy, AFAIK)?
Or is it because of the Aroma gapps installer not being compatible?
Any solution other than manually picking up gapps with Titanium Backup for restore?
EDIT: well, open-gapps.org mentions that automatic backup is handled by most ROMs. So, this seems to me as a feature request or a bug.
I'm personally not using Gapps at all but I'll have a look on this. It's probably important for many of you.