From what I hear, CAL intends to renegotiate the leases on the Airbusses and crew them with the present Air J pilots. In time, the plan is to possibly switch to Boeing and train the guys over. It wouldn't make sense to have Trinidadian pilots 'based' in Jamaica and I don't think anyone would particularly want to go either so all the hysteria about CAL replacing all Jamaicans with Trinidadians is misplaced.
If history is any guide, be prepared to re-interview for your jobs (some will not be taken back) and be offered imposed contracts that you might not be entirely happy with.