Differential Backup running as a full. Does renaming TIR_INFO file corrupt the backup?

Hello hope someone can help

Please see the link below as I am having the same problem and we are running NetBackup 7.6.0.1

http://www.symantec.com/connect/forums/incremental...

We need to move this file server share to another disk and it does take some time to backup for a full. We now have a full but when the differentials run the TIR_INFO file is not being renamed still says new so the differential runs as a full.

It does run a differential if I renane the file, but will this affect the data when I come to do the Synthetic Full?

Failing that I will uninstall the client and re install, but we have 18 other drives on this cluster which do not have this problem

But does re naming the TIR_INFO file affect the backup?

Thanks in advance!