I am not able to get this issue to occur. Photo Mechanic always follows what I have set in Preferences. Is there any scenario where it doesn't give you the warning? Ror example, if you select 2 images and use the shortcut, does it still warn you? If you set the maximum to 500 (which is the limit of what it will allow) and use the same set of 30 or 40 items that were previously giving you the warning, do you still get the warning?