Can we bring in features or customizations we didn’t move from classic Sales to Redwood later if needed?

The Redwood Migration Accelerator tool is a one-time jump start to migrate your classic Sales layouts to Sales in the Redwood UX. Any further modifications or customizations can be done in a Visual Builder (VB) project. After you use the migration accelerator tool, later extensions need to be carried out through a development process. Sales in the Redwood UX is a new solution, and the migration tool helps bring UI customizations done previously forward to Redwood.

Caution: The migration is a one-time pass per object. If you want to migrate accounts now, for example, you can’t later do more accounts, because this would override any subsequent changed done in VB. But, you can do accounts on day 1, for example, opportunities on day 2, and custom object XYZ on day 3.