So it appears that, if one unequips the SRV bay that has one's scorpion in it, that the scorpion is gone and replaced with a scarab when one re-equips it and one can't get the scorpion back. One is forced to find a military economy port with outfitting and buy a new one. Anyone else seeing this?
Edit: Would be nice if purchased SRVs were managed like modules or if SRV bays would retain the purchased SRV when storing (and indicate which SRV is loaded in outfitting). Or, at the very least, allow new ones to be purchased/equipped in fleet carriers without stocking them in the carrier like we can with the scarab. This is still not optimal since one would still be forced to buy a new scorpion any time they decide to unequip their SRV bay for whatever reason.
My experience has been different: I purchased a planetary hangar on a ship and put a Scorpion in it, moved back to my FC and stored the planetary hangar because the SRV wasn't needed on that ship.
I changed ship to the one where I will need the Scorpion, and went to install the planetary hangar but a problem arose: I had three planetary hangars stored, and no way to tell which one had the Scorpion, so I had to go by trial and error.
In the end I found the one with the Scorpion (the other two had the Scarab, obviously).
In short, when I stored the module with the Scorpion, it retained it, but if you have multiple hangars in store, you cannot tell which SRV they carry.
Are you sure you did not have more than one stored hangar, just to he sure?
I haven't tried with logging out and back, so I don't know whether logging out resets the hangar to a default Scarab