Apply filter to non-exporting glyph

Glyphs
1

Hello, I have the following setup:
cent is made from c and _cent.bar.
I want to round the bars at a smaller radius than all other glyphs, so I did the following:

PreFilter: RoundCorner;20;1;include:_cent.bar
Filter: RoundCorner;40;1

This works, but only if my _cent.bar glyph is set to export.
So, I add a final parameter:

Remove Glyphs: _*

But now the PreFilter isn’t applied to my _cent.bar anymore.

My question: How can I apply filter to glyphs (which are used in composites) and then remove them upon export?

2

The Round Corner filter was checking the export status of the glyph. Most other filters didn’t. I removed the check.