I very often want to work with just the one style of in-out clip but there is no way to do so.
For the Older clips that were misLabeld as In/Out
you can rename the clips, by removing the value of In/out from the clip type.
These are the clips where the Performer was hidden behind the table, and then popups up from behind.
Early on, they were classified as In/Out because the Performer enters from being off the screen.
But the True In/out clips are the Ones the Enter from the Side of the screen.
In/Out has a Value of 64, so from the Clip type number, subtract 64
After you Have renamed them, do a rebuild Collection.
These renamed Clips will no longer be Filtered out as in/Out clips.
But you won't be able to Include them specifically, since they are then, no longer a unique clip type.