RE: Copy data from different company
1. with configuration packages, you get no posted transactional data
2. this is a master data synchronization, again no posted transactional data will move
3. this is worth a try but not necessarily easy and I'm not sure about posted data
Just because your companies are in different environments does not restrict you from doing intercompany sales. But if you absolutely require the move of one company, I do believe you will loose your posted data. You can recreate general ledger entries, open AR, Open AP, fixed asset and inventory data much like you would for a new implementation.