Ok, here's how I handle the Acquisition date issue.
1. Use Service life, remaining life as the depreciation method. You must import Service life, Depreciation periods, and Depreciation periods remaining. Don't import Depreciation run date as the system calculates this.
2. Import the assets with the cutover date as the Acquisition date. This will default the Placed in service date to the cutover date, which is what you want.
3. After acquiring the assets and posting the accumulated depreciation journal, run another import to update the Acquistion dates only. This will not affect placed in service date but will provide a record of the actual Acquisition date in the book.
Depreciation will be calculated properly going forward.
Note: you posted another thread on this same topic. Please delete the duplicate.