Hi Kenneth
Are you getting error message or warning? We had this issue, but it was not error message, it was warning.. when we continued, we were able to release the transport and it went to QA successfully.
also, in case you are planning to add datasource, delta will not break.
regarding delta DTP: check the DTP original technical name in QA. it should match with DTP name in Dev. (Table: RSBKDTP, field DTP_ORIGINAL). In case there is mismatch, you will have issue.