Note for import script: If there is a Bugzilla alias, put "Alias: alias-name" in Maniphest description so it's searchable.
Since we upgraded bugzilla (currently 4.4.4), we have an increasing (IMHO worringly increasing) number of bug aliases, which can be used in place of bug numbers anywhere, e.g. dependencies and URL.
https://bugzilla.wikimedia.org/show_bug.cgi?id=37883 ~ https://bugzilla.wikimedia.org/show_bug.cgi?id=Commons
What's the plan to preserve links to such non-numerical IDs? Surely we're not going to keep the bugzilla database in place for redirection, and perhaps we don't want to have hundreds or thousands URL rewrite rules?
This needs to be figured out urgently: in worst case, aliases (or at least their direct usage in URLs) should be disabled on bugzilla.wm.o to reduce future damage.