World quest weapon iLvl not supported

AMR does not appear to have sufficient options to designate World Quest weapons that have been iLvl and rarity boosted.

Since as far as I know you cannot alter something like an item’s Corruption without completely specifying a “new” item to place in the slot, it is not possible to sim with the weapon I have because it is evidently unsupported.

Is there some way around this or is it just an oversight?