I think going forward that may be easier for IK to do, but a big part of what's possible from training is dependent on what is in the training file to begin with. So if there is some information not present in the reamp, the training might not stand to improve any further (at least in a meaningful way). On V2 the training files get saved and archived locally on the computer so I'm sure it's possible to retrain off the same reamps easily now.
(Preaching to the converted on this forum but maybe someone from IK will give in) One aspect IK really should get a grip on (that can be retro-added to existing models) is the input level thing, NAM has demonstrated clearly how advantageous it is on a platform that has the same issues of everyone capturing using TOTALLY different gear and levels. When using captures on a HW device, having that parity between what someone hears in the studio, and what they hear coming out of their pedal is so easy to solve with metadata. Instead we still have to deal with guesswork and fudging around, largely on models where NO-ONE even knows what the original levels are.