That`s why i recommend a new projekt.
If you start a new one and import everything which is possible
(afaik not- bounced and -freezed effects can not be imported)on the
right place you can recognize, if the new interface works,the migration is the reason aso..It would lead you 1 or 2 steps forward.
To get the tracks in the exact position in a new projekt folder I
cut my tracks as often as possible to the same starting point......and mirror them on another hd.
Yes, I know, it`s a lot of work, but so I´m nearly sure of not loosing too much work!
regards