Issue #2763637 by Jo Fitzgerald, quietone, hussainweb, timwood, alexpott, heddn, mikeryan, phenaproxima, maxocub, BenStallings, catch: D7 taxonomy term fields are not migrated with allowed vocabularies

Issue #2787185 by botris, mikelutz, kekkis, mikeryan, lemuelsantos, mvbaalen, quietone, BenStallings, mpotter, heddn: track_changes does not work when the map is joinable