Comment 3 for bug 192511

Aren, superseded packages don't remain in the archive permanently, their deletion is scheduled and once all the references for the files are gone (which happens pretty quickly if you are nore using orig tarballs, for instance) the files will be purged from the repository pool.

So the PPA ui default filter (published sources) reflects exactly what is listed in the repository indexes. nothing more, nothing less.

You can resurrect a superseded source manually by using the 'copy packages' feature, simply copy the old source back to the same series in the same PPA.

I really don't thing re-publishing old versions automatically is a good thing to do.