Here's a quick(or not so)fix for it...
Open the !Sara.cr2 in a text editor, before you make any changes, save her under a different name.
Open this newly named .cr2, do a find/replace...

find- valueParm
replace with-targetGeom

Save this .cr2.
Use this one when you may want to create a .fc2.
Open your .fc2 in a text editor, you'll see that it now contains the above mentioned channels.
Change the targetGeom for these channels back to valueParm and save.
This .fc2 will now work on everyones Sara character.

The valueParm channels are not saved in a .fc2, but targetGeom channels are. You could remember your settings and add them by hand, but a little bit of find/replace is much easier.