This is correct.
This was very likely due to some kind of major failure. Probably in the electrics. Landing without gear extended will result in a damaged beyond repair TBM. What you SHOULD HAVE done was manually pump the gear down using the emergency gear extension lever located under the floor, just aft of the centre console.
25 pumps gets the gear fully extended. This would have given you a safe landing and then you would have been able to repair any electrics in the maintenance manager.
100% no. Creating a new airframe deletes the previous entries for the previous airframe. When you create a new airframe, the last one is lost forever.
Possibly. But it could have been something in the default X-Plane failures module. We've seen some people report issues with the TBM failures and not being able to repair them due to some failure they have set in the default failures of X-Plane. But seeing as you have confirmed this is not the case, it's likely something else.
Absolutely. We've consulted with a TBM pilot and owner (the co-founder of Foreflight) on all the little details and operating procedures of the TBM 900. A small malfunction could easily and quickly snowball into something major.
As in real world ops, failures happen, and it could be any number of sequences that lead up to them. The key is to follow the appropriate checklists for the failure you are experiencing (in your case, loss of power and landing gear operation.) and do what you can to either re-establish power or land at the nearest airfield.
Our TBM is extremely complex, and follows real world ops very closely. If you experience a failure of any kind, you need to follow the appropriate checklists, otherwise things will spiral out of control very quickly.