DTP is only extraction 50,000 records and stops

We are on BW 7.3.  We are loading from one DSO to antoher DSO.  Our settings on the DTP are as follows.  When we have more that 50,000 records they do not get sent in another package so it doesn't send all the records so we have missing data.  Should I have another setting?

Extraction Mode = Delta

package size = 50,000

Parallel extractions is checked

processing mode is parallel extraction and processing except delta initial.

Thanks