The Vehicle Respawn Module offers three settings for the Wreck attribute: Preserve, Delete and Delete with an explosion.
Out of these, Delete seems to be the only one working properly and somewhat reliably. Sometimes Delete with an explosion works as intended, sometimes it does not (the explosion is often missing); but I could not establish a pattern for that.
The Preserve setting is the most consistent of them all, as it reliably teleports all wrecks to [10, 10, 10], regardless of the preview mode and setting chosen for the Position attribute.
Once one starts mixing SP and MP Editor previews or trying out different Position settings, test results for Delete and Delete with an explosion start to diversify even further (e.g. the wreck explodes and is deleted but the vehicle respawns at the wrong position).
I have not conducted any tests involving a dedicated server, behaviour in that environment might be different yet again.