Bug Grounded 1.4 Baby Ants

[Bassilisko]

When playing in a shared world and giving food to the queen ants, starting with the second one it forces you to use the second baby ant which makes you lose the inventory saved in the first one, it does not allow you to choose which one you want to use as inventory, and one of them is blocked if or if there are no shared inventories

[Ensign Toby]

Disclaimer: I am playing single player

I currently have 3 pets (original Weevil, and Red/Black Ants) all with separate inventories.
The only precaution I took was parking my pet(s) in Pet Houses BEFORE feeding a Queen.

I've switched pets back-n-forth multiple times, and all pets/inventories function normally.
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You could try using the new Pet Recovery option; which I believe can be found under the Game Repair menu (haven't tried it yet, so YMMV).

I have no idea if this only fixes the pets for the host or for clients too, but I would have at least enough Pet Houses already built (to house all pets + 1) PRIOR to using Pet Recovery (cause it attempts to put them "back" into their Pet House(s)).

Good Luck.