Ok, this is may be the weirdest experience I've ever had with the CK.

Somehow, some way my mod has managed to alter a vanilla cell by removing one roombound and one portal (and placing them into a cell of mine). It has achieved this without registering any edits to said vanilla cell. Please don't ask me how this anomaly came to be, I am flummoxed.

My problem is that I can't seem to fix this via File Details. The cell is MarkarthVindrelHall and the missing roombound+portal are now inside my MDHMzandahrkTheatre. If I delete them from that cell (without ever going anywhere near Vindrel Hall in that session) I then receive edits for Vindrel Hall. If I proceed to go and clean this tomfoolery up via File Details they get restored to my cell and Vindrel Hall appears to be perfectly clean.
In-game this is very noticeable as stuff will blink in and out of visibility whilst in full view.

http://sphotos-g.ak.fbcdn.net/hphotos-ak-snc6/330677_328989433874855_2009198912_o.jpg You may still need to zoom in a bit. I don't know anywhere I can upload high resolution images except facebook.