BO,
As RBALL stated, the backup job should continue uninterrupted on the Agent machine. The communication loss should be only between the Management Control and BESR Manager. The usual fix is to download and run the EasyInstaller for "Management Control ONLY". The BESR Agent should not need to be reinstalled.
There are several communication fixes in the BESR/BESRM 7.0.3 version. The upgrade from 7.0.1 to 7.0.3 can be a bit touchy. The most successful method is Uninstall / Reinstall, however, an inplace upgrade is usually successful.
After upgrading BESR Manager, Agents will also need to be upgraded to the 7.0.3 version.
Regards,
Rich L