You can change the vSphere agent behavior to move vRA destroyed VMs to a folder, instead of delete from endpoint.
Example: Place Destroyed Machines in a Folder
Type the following command to change deletion settings such that destroyed machines are placed in a vCenter Server folder, VRMDeleted, instead of immediately deleting them in the vCenter Server (the default).
Dynamic0ps.Vrm.VRMencrypt.exe VRMAgent.exe.config set doDeletes false