Augh, just uploaded 1.7. TES5Edit seems to solve many stability and performance issues, but as soon as I save the mod again in the CK all the deleted 'Identical to Master' records return somehow. Anyway, hope I'll have time soon to start modeling in more custom assets for 1.8.
Weird. Do you edit anything at all? If you touch anything than I'd say that you're touching a bunch of vanilla stuff, even if on accident. I recommend running your mod through TES5Edit at least right before each upload, if not intermittently while you work. (Not while your mod is actually loaded in the CK, of course)
It definately removes those records; it doesn't find any records if it searches a second time around after deleting them. Basically I just go into the CK and save without changing anything, then go back into TES5Edit and 6015 records are back.
On another note, have you ever had any issues getting custom music into the game? Not sure if this is somehow related to the 1.9 patch, but whenever the game tries to load an xwm track I included in my bsa, the game crashes. If I copy the xwm files to the Data folder as loose files, everything seems ok. It only seems to crash when it loads them from the bsa.
Woah, weird. If I were you I'd apply a filter for cleaning in TES5Edit and check all the conflicting records by hand. Who knows what you have hidden in there that the program may leave behind when automatically removing dirty edits.
No I have no problems with custom music. I have about 10 or so custom songs that are xwm and they load just fine both as loose files for me, and in the BSA that my testers use. Make sure you've set up the music type correctly so the game isn't trying to do something it shouldn't.