Documents versions giving different amounts "to invoice"/filtering problem

Problem:

user reported that his vendor sees list of 40 files to invoice for while he sees only 31 files to invoice.

Hint:

look at your filter settings. In order to see the same you need to compare your filter settings and your vendor's filter settings and make sure they are the same.

Example:

Have a look at below screenshots and take note of highlighted option.

Such a tiny thing which can be ticked mistakenly can cause trouble in seeing the same output as your vendor.