Gostev, that should apply to even 5.5 as long as it has the update to correct the problem, right?
In that case, we can change the registry setting so Veeam stops resetting CBThttps://www.veeam.com/kb1940
Veeam Backup & Replication v8 and Later
Veeam Backup and Replication 8 has a built-in solution for this issue. Veeam Backup & Replication resets CBT for any resized VMware disk to prevent corruption. If ESXi hosts are patched against this issue, this behavior may no longer be desirable. To disable automatic CBT reset upon virtual disk size change, create the following registry value on the Veeam Backup Server (requires v8 Update 2 or later):
Key: HKLM\SOFTWARE\Veeam\Veeam Backup and Replication
Value name: ResetCBTOnDiskResize
Set this DWORD value to 0. To apply the registry change, make sure no jobs or restores are running, then restart the Veeam Backup Service.