Stuck in Rhino 6 save format

No matter what I do to save Rhino in other than R6(I have R6,7,8) it will only do a R6 format. I have tried all the standard techniques save as copy etc. No matter what ver of R(7,8) it still marks
as R6. If I look at in Window explorer it is always R6.

Rhino 7 SR38 2024-12-3 (Rhino 7, 7.38.24338.17001, Git hash:master @ 97e36efa02d7f71638988290bb2d190fcf1b18c5)
License type: Commercial, build 2024-12-03
License details: Cloud Zoo

Windows 10 (10.0.19045 SR0.0) or greater (Physical RAM: 32Gb)

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce GTX 1060 3GB (NVidia) Memory: 3GB, Driver date: 8-14-2024 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 560.94
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port 0
- Secondary monitor attached to adapter port 1

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 8-14-2024
Driver Version: 32.0.15.6094
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 3 GB

Rhino plugins that do not ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\RhinoCAM 2024 for R7\RhinoCAM 2024 For Rhino7.0.rhp “RhinoCAM 2024 - The cutting edge CAM plug-in for Rhino 7.0 from MecSoft Corporation”
C:\Users\JIM\AppData\Roaming\McNeel\Rhinoceros\7.0\Plug-ins\XNurbs (80be33b0-13b2-4ac4-9c77-03829214f9e9)\7.0.1.1\XNurbsRhino7.rhp “XNurbs”
C:\Program Files\Rhino 7\Plug-ins\RhinoCAM 2024 for R7\RhinoArt1FileExporter For Rhino7.0.rhp “RhinoArt1FileExporter”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.38.24338.17001
C:\Program Files\Rhino 7\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 7\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 7.38.24338.17001
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.38.24338.17001
C:\Program Files\Rhino 7\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 7\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 7\Plug-ins\RhinoCycles.rhp “RhinoCycles” 7.38.24338.17001
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.38.24338.17001
C:\Program Files\Rhino 7\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 7\Plug-ins\Calc.rhp “Calc”

It seems to be issue with the default program settings for openning files in Windows File Explorer. Could you try to set the default program for .3dm files to Rhino 8 ? Thanks.