took a look at your save and we have some questions.
I manually cleared the wildland, and yes, I hit the last goodie hut and nothing happened.
I do not know if the AI had been in there before me. I did not see any AI units in the wildland from the time I entered it until I defeated the boss and cleared all the goodie huts.
Auto turn was turned off, I never use it.
I might have a saved game from before I entered the wildland, but I suspect that if I do it would be from long before my army entered the wildland. Would that help?