I receive this error on loading the CS, in a mod I'm repairing. I know what it's for, my forms don't exist anymore, but I can't get rid of the error as reported in Editorwarnings.txt. There is no impact on the mod that I can find. How may I remove this permanently, it's an annoyance if anything at all?

"Some of the bad forms encountered during load could not be removed from the file."

I'd guess that what's being flagged is the referenced to the deleted forms, in scripts etc. It may be as simple as loading it up in CSE and using its "compile all scripts" function - which only does the ones in the loaded mod, not the ones in Oblivion.esm - and then hacking out the references it shows up as invalid. I don't know if that catches result scripts in quest stages or dialog - I suspect not.