I suspect when William said "old releases" he meant "already-published releases for which we generally and strongly prefer not to regenerate indices". That said, a one-time regen of only Sources and no other indices, might not be the worst thing ever, if we fix apt-ftparchive to include the missing bits. I'd still prefer not to.
That said, under no circumstances will we be "fixing" the .dsc (or replacing the source packages) in stable releases.
I suspect when William said "old releases" he meant "already-published releases for which we generally and strongly prefer not to regenerate indices". That said, a one-time regen of only Sources and no other indices, might not be the worst thing ever, if we fix apt-ftparchive to include the missing bits. I'd still prefer not to.
That said, under no circumstances will we be "fixing" the .dsc (or replacing the source packages) in stable releases.