how to delete the source of glyph filter

[sofeiya2021 (Sofeiya)]

my source is flux.pvd

this is the glyph filter results from flux.pvd
I just want to keep glyph1. How should flux.pvd be deleted

[mwestphal (Mathieu Westphal (Kitware))]

Click on glyph
File → SaveData
Edit → ResetSesssion
File → Open previously saved glyph

[sofeiya2021 (Sofeiya)]

thank you
the problem is solved