Unable To merge land units

[Blodughadda]

Hi!

During my current play-trough as Kilwa, I was invading Madagascar and decided to get a few extra cavalry units from my mainland and merge them with my main force. Problem is that when I try to merge anything with said main force the merge button only says "It's not possible to split or merge navy units on an Automatic Fleet transport mission." I have no idea what caused this or how to resolve it. The only solution I found is to completely disband my main force and just spend all my manpower to rebuild it from scratch.
Does anyone have any solution or insight in to what caused this and how to avoid it from happening again?

Cheers!

 

[netherlink]

Looks like there is still a naval transport mission doing its job, where the top unit in the screen is involved.
When you move more troops via auto transport than transport ships are involved, the units are considered as "being transported" as long as there is still a movement going on, even when the units already arrived at its destination. To fix this, you need to "dispatch" the units from auto transport by moving them and/or cancel the ongoing auto transport ships.
EDIT: not necessarily the top unit but any of it...

 

[Blodughadda]

Looks like there is still a naval transport mission doing its job, where the top unit in the screen is involved.
When you move more troops via auto transport than transport ships are involved, the units are considered as "being transported" as long as there is still a movement going on, even when the units already arrived at its destination. To fix this, you need to "dispatch" the units from auto transport by moving them and/or cancel the ongoing auto transport ships.
EDIT: not necessarily the top unit but any of it...

The thing is, the army had been moving freely, and I have done nothing different then before, I think the main issue is when I was going to move the army from my mainland provinces to Madagascar, I had to manually park my navy at the same province and then click the "Attach to Transport" button and then when they were at sea go for the "transported units" and then I could move them to land. This is still something I have to due because otherwise it just said that an enemy fort is blocking it despite it being between my own provinces.
Could this have anything to do with it? or must I cancel a non existent transport order from my fleet?

 

[netherlink]

What i can tell is, whenever i have such issues with auto transport, i fix it with giving new move orders and cancellation of the transport order. The game wants to keep your army "intact" by merging the last troops transported to the first ones. So you have to "tell" the game explicitly that the "old" army which got the transport order is no longer what you want. Most easily, like i said, by moving the army and stopping da boats.