Change in Weblate - How to continue?

I made wrong translate in Weblate in past. I corrected it:
 
What should I do now?

Wrong translate Vel. => G0
Right translate Vel. => Rych.

Vel. is Velocity
Rych. is Rychlost

Will the fix be done automatically after some time, or do I have to send it from weblate to Github somehow?

I found out that from weblate the translations to LCNC are automatically received. However, weblate sends it to the master branch. I want to make changes in the 2.9 branch. Can I do a normal Pull Request with a patched *.po file to version 2.9? I remember there were some issues with weblate and Pull Request collisions. I should have written a note about immediately merging to master and ignoring the *.po file.

The changes you make via Weblate will only aopearn in the Master branch.

If you update the po file in older branches, there will be conflicts when merging up or when Weblate wants to push its changes.

I am pretty sure that updating a 2.9 po file will work with this receipe.
I will try it the next time:
github.com/LinuxCNC/linuxcnc/pull/2946#issuecomment-2018364607