Odd glitches in FM 8.3 and security filters

[ssanders]

I'm using FM 8.3 to work on a Data Manager 8.2 package.  In MetadataCollection -> Physical Metadata, I'm applying some security filters on several objects based on AD groups.  The rules look like this (varies based on object, group, and account name):

substring (OBJECTNAME.Account_No ,1,4) IN ('1001', '1002', '1003' )

The strange thing is that on one group when I go to "Create/Edit Embedded..." and remove 2 of the accounts (administration wanted him to see fewer lines on the report) and hit OK, it asks me if I want to save the changes to the project.  If I hit OK, FM saves the project and closes down.  If I hit cancel, it still accepts the changes I made and acts like nothing unusual happened.

A different glitch was happening in an earlier version of the project but has since disappeared.  I was working on it just like described above except I was adding more accounts to an existing group.  When I was done working in the "Create/Edit Embedded..." window and hit OK, it would close out of all the Security Filter window and no changes were accepted.  It only did it with a certain account number in a certain group, and about 1/3 of the time it would act like it should and accept the changes without kicking me out of the "Specify Data Security" window.  I was using copy/paste exactly the same way every time (and I checked my syntax like a dozen times), so I know it wasn't a typo.

When it does actually accept my changes, everything appears to work fine.  The published package functioned like it should in Cognos Viewer. I'm worried that some garbage is getting written into my package somewhere and over time might cause something to crash.

Anybody else seen anything like this?

???