Delta Issue?

Two records that we created on R/3 did not get uploaded through my delta load. The time when I ran the delta was just a few minutes after they were created. That is the only reason that I can think of at the moment why they didnt get pulled. So since they were missed, how do I get them now? I ran the delta again after a couple of days also but no records. Is there a way to get those records??? thanks for the help

Fran