If I filter a list, the records that do not meet that criteria are hidden.
The hidden records are the records I want to keep.

If I select the visible rows or records and right click to delete them, will
all of the hidden records return when I view all records in the list?

In terms of training, would it be "safer" to teach users to sort by that
criteria so that the records are together, and then delete those records?

Is there a function that allows you to filter and select at the same time in
order to accomplish deleting certain records from the list?

This question almost seems backwards to me. For example, an even better
approach would be to do an advanced filter on what you want to another file
so that you retain the original list somewhere.
--
Thanks.
Confused