Lord Bless!
ROCOR will never be absorbed into the OCA; what will happen if these Churches enter into full Communion is each will still have its own hierarchy and legally they will still be two seperate Churches; the difference will be simply that these two Churches will be in Communion and their clergy will concelebrate. It will be a long time before the other Jurisdictions meet ROCOR's criteria for union; when they do it will essentially be up to the Holy Synod what actions will be taken, but we have a long time before all of this happens; the talks between ROCOR and the MP are still very sensitive - there is still a dis-trust of MP hierarchy and still too much evidence of the MP talking out both sides of its mouth.
In Christ,
Alexis
Lord Bless!