Migrating to microsoft.net and sharepoint

My IT department plans to migrate all notes to microsoft.net and sharepoint, claiming the later is so much easy to migrate, having more features, and the server cost is much cheaper. I wonder, how they plan to convert archived data, especially with applications designed with linkages to SAP, we also use Quickplace, Sametime, etc.

Subject: Migrating to microsoft.net and sharepoint

How did your migration from Lotus Notes/Domino to Sharepoint go? What were your experiences, good or bad? Has there been a good return on the investment?