two questions about new upload method

[Andrew Schulman]

(1) Is there something I should sould be doing to tell upset which package
versions are old and should be purged?  I uploaded lftp, and the new
version was added to the archive, but the old one (4.4.7-1) is still there.
Do I need to add curr: and prev: lines to setup.hint?  Or will upset figure
that out and remove the old versions at some point?

(2) I uploaded the unison packages for x86_64 in subdirectories of
x86_64/release/unison:

x86_64/release/unison/unison2.27
x86_64/release/unison/unison2.32
x86_64/release/unison/unison2.40
x86_64/release/unison/unison2.45

because that's how they're organized in x86/release.  Will upset pick them
up when they're organized that way?  I only ask because it's been about 18
hours and they haven't appeared in any of the mirrors yet, although upset
seems to be running every hour.

Thanks,
Andrew.