I’ve only ever purchased the Standard ARX ships.
If I’m correct in my thinking, it’s only the Stellar version that you can deploy anywhere (in its original bought format.) So if you find yourself at Station B you can deploy that ship there but you must first sell it from its location at Station A, thereby avoiding shipping time and costs. Someone who has a Stellar version and has done this would need to confirm or correct that.
What I meant is simply that when I purchase the standard version with ARX I will deploy that one, then go and buy another one with credits from a shipyard that stocks it so that I have two. When you buy with ARX, either version, the ship also unlocks in shipyards (that sell it) for in game credits so you can have as many of them as you wish ….. but only the first, ARX bought, one has the benefits that come with ARX purchased ships.
Hope that makes sense!
EDIT: I engineer regardless but that’s because I don’t use the summon feature (due to buying the cheaper version.)