Hi LouBouha
I do not remember seeing any of your post in Trash, but have been Merging alot of Double posts lately ie: 2 posts one after the other. You will see a note at the bottom of your post if that has happened.
If they have been trashed the Trash section, it is cleaned out on a regular basic to keep the Forum clean of Dead posts and yes your post count goes down.
Your Rep shouldn't change but can't guarantee that, but the Forum can not keep all posts as there is a limit as to how much space it takes.
The Forum is now sitting around 75% full after a Major clean out.
So sorry for any bodies concerns but all is running much better now, solong as people make worth while posts and no thankyou and post in English etc and read the rules.