Bug report: filesize increase on export

[Enferlain]

Describe the bug

I imported a 70mb vrm model to blender to cut down on vertices and shapekeys for optimization. I clicked "Create VRM Model" and then went to export .vrm. The exported file size is 120mb after the process. If I export the model without using "Create VRM Model", it's 290mb. Does blender have a problem with the vrm format?

To Reproduce

Steps to reproduce the behavior:

• import vrm
• "create vrm model"
• export vrm

Expected behavior

To not increase the filesize of the model

Desktop (please complete the following information)

• OS: win 11
• Blender 4.2
• Addon Version 2.33