There really needs to be a warning put in for the lag removal because I have lost many items and so have a lot of my friends. (Including valuable stuff!)

Agreed.

 Suggestions, mod or server, should go in the suggestions section. I will say that this is a definite problem though. For now, it's advised to not leave any items on the ground. For example, if you're giving a friend an item, place a chest. Additionally, don't break chests to move items

 Ok next time I will place it into the suggestion section