IMPORTANT
This operation must be performed for all Veeam backup jobs whose VMs are also protected via SynetoOS.
Step 1. Launch the Veeam Backup & Replication console
Step 2. From the left panel, click on Jobs and then on Backup

Find the backup job of the VM for which you want to modify the settings.
Step 3. Right-click on the backup job and select Edit

Step 4. From the left panel, select Storage

Step 5. Click on Advanced

Step 6. Click on vSphere tab

Step 7. Disable the option Reset CBT on each Active Full backup automatically

Step 8. Click OK and then on Finish