BUG on MoveUVN - V7sr34

Hi guys, I was playing with History and I got this repeatable bug where the MoveUVN on this rebuilded srf make a mess with isocurves.
Doing the movement shown into the picture gives me the result in the second picture

20231104_MoveUVN_History_BUG.3dm (436.6 KB)

Rhino version: (7.34.23267.11001, 2023-09-24)

System Info:
Rhino 7 SR34 2023-9-24 (Rhino 7, 7.34.23267.11001, Git hash:master @ a37d83041828484840f2448d5b3e3770e46694f9)
License type: Licenza lab educational, build 2023-09-24
License details: Cloud Zoo
Expires on: 2024-11-01

Windows 10 (10.0.19045 SR0.0) or greater (Physical RAM: 16Gb)

Computer platform: LAPTOP - Plugged in [93% battery remaining]

Non-hybrid graphics configuration.
Primary display and OpenGL: NVIDIA Quadro M3000M (NVidia) Memory: 4GB, Driver date: 3-9-2023 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 528.79
> Integrated accelerated graphics device with 4 adapter port(s)
- Windows Main Display is laptop’s integrated screen or built-in port

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: 3-9-2023
Driver Version: 31.0.15.2879
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 4 GB

Rhino plugins that do not ship with Rhino
C:\Program Files\Chaos Group\V-Ray\V-Ray for Rhinoceros\V7\VRayForRhino.rhp “V-Ray for Rhino”
C:\Program Files\Common Files\McNeel\Rhinoceros\7.0\Plug-ins\XNurbs (80be33b0-13b2-4ac4-9c77-03829214f9e9)\6.1.1.119\XNurbsRhino7.rhp “XNurbs”
C:\Users\gttrc\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\NVIDIADenoiser\0.4.3\NVIDIADenoiser.Windows.rhp “NVIDIADenoiser.Windows” 0.4.3.0
C:\Users\gttrc\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\raytraced-materials\0.1.5+v7.4\RaytracedMaterials.rhp “Raytraced Materials” 0.1.5.0
C:\Users\gttrc\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\SubstanceImporter\2.0.3\Substance.Win.rhp “SubstanceImporter” 2.0.3.0

Rhino plugins that ship with Rhino
C:\Program Files\Rhino WIP\Plug-ins\Commands.rhp “Commands” 7.34.23267.11001
C:\Users\gttrc\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\SectionTools\2021.4.30.511\SectionTools.rhp “SectionTools”
C:\Program Files\Rhino WIP\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino WIP\Plug-ins\RPC.rhp “RPC”
C:\Users\gttrc\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\PanelingTools\2021.3.2.446\PanelingTools.rhp “PanelingTools”
C:\Program Files\Rhino WIP\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 7.34.23267.11001
C:\Program Files\Rhino WIP\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino WIP\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.34.23267.11001
C:\Program Files\Rhino WIP\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino WIP\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino WIP\Plug-ins\RhinoCycles.rhp “RhinoCycles” 7.34.23267.11001
C:\Program Files\Rhino WIP\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.34.23267.11001
C:\Program Files\Rhino WIP\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino WIP\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino WIP\Plug-ins\Calc.rhp “Calc”

Hello- My guess is MatchSrf was used with ‘Refine’ checked in the dialog. I tend never to use refine until, possibly, the bitter end when I need to join things up, for this very reason - it tends to be over-zealous.

-Pascal

Hi Pascal,
Normally I don’t use the refine for your same reason.
I’m not sure this is the case where trying made me changing that option.

I’ll check.