Old transport logs are not visible after EHP upgrade

Hi All,

We have recently moved to NW 731 in one of our system and after that we are not able to see few old transport requests logs. I checked and found no data files, cofiles etc are existing for these transports. These transports were moved till P some time back.

Analysis till now:

There are only few transport requests not visible , no data files, cofiles, transport logs present.(The requests which are old than required requests are visible)

Records can be seen in E070 of DEV system but not in Q or P.

Could you please help me to identify where or how i could get these transport logs?

Thanks and Regards,

Deepak