Restore configuration to GTM Sync Group device

I am in the process of writing up a change to delete config from a GTM Sync Group which I am fine with but I am looking to confirm my thoughts on how to restore the configuration should I need to back the change out.

For an LTM F5 I would create a UCS file on the Standby device before making any changes as the first step. Then should I need to rollback I would just restore the UCS file to the Standby device, check that the configuration has restored correctly and then sync the Standby device to the Active.

I think that a similar approach will work for the devices in the GTM Sync Group but I want to avoid the restored config automatically syncing to the other devices in the GTM Sync Group so my thoughts on how to do this are as follows:

1. Log onto the Standby F5

2. Navigate to DNS > Settings > GSLB > General

3. Untick the 'Synchronize' and 'Synchronize DNS Zone Files' tick boxes

4. Change the Group Name to something unique.

5. Save the config

6. Create the UCS file

7. Reverse the changes made in Steps 3 and 4

8. Delete configuration

The thinking here is that should I need to restore the config from the UCS file there is no chance of this automatically syncing to the other devices in the GTM Sync Group since it was not part of the GTM Sync Group when this was taken. Once restored I would then update the description for one of the WideIP's (simply append something like '1234' to it) so that this has the higher 'commit-id' and then add the device back to the GTM Sync Group. Since the newly added device has the highest 'commit-id' this would then push the confog back to the GTM Sync Group and I am back where I started.

To my mind this makes sense but it would be very much appreciated if I could get a second opinion on this.