I upgrade my troops and they dissapear. I had 49 in total. I upgrade 9 and suddenly i have 29 troops. I recruit 19 more, I upgrade them and, Instead of 48 i have... 38!!
Now i Lost half of my army... JUST WALKING!
This sounds like a client error as noone else has reported this, back to your save games and try reinstalling AWOIAF.