If for some reason I have added a file that at commit time appears to be a pristine file, the 'id' file is committed, but the original file it belongs to is not; making it impossible to commit a clean checkout of that tree (without the pristine file).

Example:

touch ++bla
tla add ++bla
tla changes
A  .arch-ids/++bla.id

Notice the absence of the ++bla file in the changes list.

This bug has some correspondence to 6446, but is certainly distinct in that it is possible to trigger this bug even when 6446 has been fixed. For example by altering the regexps between add and commit.