missing activities in reports
In addition to the report, the information displayed in "All Devices" are not 100% right. Some devices were backed up (I can see recovery point) but they are showing "Never" under Last backup column. (please see attached).
The issue seems to be related to the problem raised by you in the parallel thread: http://forum.acronis.com/forum/acronis-backup-125/losing-devices-backup-plan-missing-backup - the root cause should've been the same (some inconsistency in particular management server database). This has to be investigated with our support team involved.