I made a test in my testing environment. Below are my test results
I have 3 nodes in this Alwayson. CPS2019VM3 is DR node. I set firewall rules in VM1 and VM2 to block all network traffics from/to VM3. You can see VM3 became ‘Resolving’ state.
I forced quorum using below command
Then I made a force failover allow data loss for AG.
I updated 1 row in VM3. I want to see if this data will be kept after resuming data movement.