LV2025Q1 Source code version bug

[ImreSzebelledi]

Hello everyone!

We were trying to change to LV2025Q1 from LV2020 while keeping the source code version v20 for various reasons. Unfortunately the new source code version handling introduced in LV2024Q3 is not working as expected because it has a dealbreaking bug for us:

If you open and save a vi under a real-time context it will modify the version of the vi to 2025 without any regard to the source code setting of the project. If you move it back to My computer context and save it again it will change the version back to the one set in the project. I am attaching a small incubator project where you can test this.

I don't know If anyone has met with this issue and could solve it, but please let me know!

Thank you!

[ImreSzebelledi]

Update:  This does not happen in LV2024Q3

[Kyle97330]

I don't have 2025 installed to check, and if what you describe is true it is likely a bug, but have you tried the ".lvversion" trick mentioned here:

https://forums.ni.com/t5/LabVIEW/LabVIEW-2024-Q3-Saving-for-previous-versions/m-p/4414972#M1301412

That's a "per directory" setting, so it might be a workaround you can use if you do want to keep working with 2025.

Also would encourage you to follow up with NI to get a full bug report going to be sure it does get fixed in a not-too-distant update.

[ImreSzebelledi]

Yeah I have tried it with .lvversion and it does the same unfortunately.