Hi Ganesh,
first of all, have you flagged the SPDD and SPAU transports in the DEV system? You have to release all tasks of the transport but do not release the transport, this will be done by SUM/SAPup.
I you have done this correct, the umodauto.lst will be modified with the entries of the target release and the name of the transports, like this:
SPDD 731 SIDK900896
SPAU 731 SIDK900898
You will find the umodauto.lst file in /usr/sap/trans/bin not in the SUM directory!
If you didn't flag the transports, than release them manually and modify the umodauto.lst with the correct entries. But you can also manually type in the transports in SUM for the next upgrade. there is no difference if the umodauto will be read or the manually specified transport. The import will be automatically done by the SUM.
But please note: Always double check your SPDD and SPAU! Not all systems are 1:1 copies with the same objects.
Regards,
Jens