Whilst the “Glyph” is selected in the Pipeline Browser, I am going to “File” > “Save Data” then using the PLY file format. In the “Configure Writer (PPLYWriter)” window, I have got “Write Time Steps” selected, “_%.3d” as the suffix and “Enable Coloring” selected.
This just outputs the same PLY file for each timestep, different sequential names, but the same file size and content.
I hope that makes sense.