Historical Data Load without deleting intialization, and requires delta

Hi All,

I have Data targets (1 ODS & 1 Cube) use the standard datasource 2LIS_03_BF and are updating with daily deltas. Intialization with Data transfer was defined earlier and now we have daily deltas.All historical data got loaded, and present we have daily deltas running.

Now I enhanced(added 10 fields) to standard datasource 2LIS_03_BF .

Need all historical data to be loaded to this new ODS , and needs Daily Delta Updates. Can I load the historical data without deleting earlier defined Intialization, if so how?