Rollback during Dataload Failure ADF

Today we had an error on STAGE when receiving an order - due to a “lost connection”.My idea was then to set this “repeat” to 3:

Please see the screenshot

Now the question is, what happens if it has already read and written half and then repeats. presumably it then writes the data twice, because it won't do a rollback. Or it writes automatically from where it failed?

example., If the connection was loast after writing 100 records to the destination table, retrying will start to write from 101st record or will it start from first?

Appreciate your help!

Thanks