Lore wise, the Liberty Security Forces have an interest in Gallia, so it is perfectly reasonable to go to gallia. If that's to steal technology then we are doing something good.
Next, we need cryocubes for bases. Getting them from Gallia makes sense inrp as I have already said but also increase's the time and effort our members put in to getting those commodities.
Lastly, player perspective, it takes around 45-55minutes to bring goods from Gallia to Liberty. So trying to do the run again is a good idea, and the current game mechanics infact support this. Rules wise, and whats required for bases.
We have both a roleplay reason, supported by lore and a good oorp reason (to gain cheaper cryocubes). I don't see any problem if its giving you more roleplay. And personnally, I'd think Gallic players would like a little more activity in Gallia. Obviously not, given that you seem to have a problem with the lore.