by WHSeward » 19 Nov 2020, 05:25
There is no bug.
"Via convoy" is ONLY applicable if 1) you want your army to be convoyed, AND 2) it could have moved to the same destination space directly without a convoy. (This order is used to invalidate the possibility of a "kidnap convoy" by an adversary. If you don't know what that is, don't worry about it. It's obscure and no longer relevant since "via convoy" was added to the rules).
In order to utilize a convoy, an army makes a "move" order, the same order if it was moving without the help of a fleet.
Hence the functionality you observe; "via convoy" is only for convoys to adjacent provinces the unit could have moved to, while a regular "move" without via convoy is for everything else.
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