A related inquiry, if I may -- if we had signed a player at position X, and he is shown in the new ratings as position Y, should we be able to return him (this time only) to position X, with or without evidence?
I raise this question more for other GMs, as in my case I have evidence: Brian Boyle is widely known to have played both C and D, and although his position on Forecaster is C, the Assets say "A natural center, he's also able to play defense"... he was signed as a defenceman late last season for precisely this reason.
I think that if you can show that a player has played/been on the roster on a specific position in HFNHL, you should be able to move the player back there.
As for rating the player as a F to D, there's a problem. You could rate a forward as a defenseman and get a very high offensive ratings, as they are not rated the same way, and then move him back to forward. Let's use Fedorov as an example. He is currently listed as a defenseman on the rosters. He has played most of the past 3 seasons as a forward. If he was rated as a defenseman he'd get high offensive ratings. If he was then moved back to forward his ratings would be much higher than if he was rated as a forward at the start of the season. We solved this by rating Fedorov as a forward, as he has played forward for most of the past 3 years. Same should apply for others as well. We might also be able to make the ratings from sesaon to season, for players that have played one season as forwards and two as defensemen, to get a more accurate rating.
As for the Bio's of the players counting as evidence, I don't see why this wouldn't be seen as evidence that the player can play that specific position. Forecaster, etc. changes the positional listings a few times/year.
I had that problem with Bäckström, who I was considering moving to the wing. He was listed as a C/W or C/LW most of last season. When I signed him in the offseason, he had been changed to C only and there was no reference to him playing wing, although he did play on a line with Nylander for the first 15-20 games of the season and has played on the wing for the national team.