To fix the issue they just switched text labels in recent patches, but they did not move the boxes. Thus if you had correct settings you do not have to change them.
In current RU version upper line is Horisontal (e.g. set @ 183 in my case) and lower line is vertical (set @ 600 in my case).
It may be the case that they did not switch text labels in all local versions as localization could be done externally.
To be sure just open the user.ini in the Docs/1C folder. The first figure is horisontal one, the 2nd is vertical. It is quicker to copy paste in this file than to use GUI changing 100 guns convergence anyway.
Code:
[Aircraft.SpitfireMkIa]
conv _Gun03 Gun.Browning303MkII 183 600
conv _Gun06 Gun.Browning303MkII 183 600
conv _Gun00 Gun.Browning303MkII 183 600
conv _Gun01 Gun.Browning303MkII 183 600
conv _Gun07 Gun.Browning303MkII 183 600
conv _Gun02 Gun.Browning303MkII 183 600
conv _Gun05 Gun.Browning303MkII 183 600
conv _Gun04 Gun.Browning303MkII 183 600