There are usually some caches that get submitted later and may not get published when the bulk of the caches get published (probably the evening on the 29th).
The earlier you get them in the better.
That's interesting that if you change the type of cache, it considers it to be a new cache submission.
I considered converting my "bonus" unknown GAG20 cache into a traditional, but in the end I decided to leave it as an unknown since it's already been reviewed, approved, and placed in the publication queue.
EDIT: I had sent a note to the reviewer last night asking about the possibility of changing my bonus unknown to a traditional.
To paraphrase his response "if it's already been reviewed and approved, I'd prefer it to be left the way it is".