Ranks reverting to Second Star League

[BowtieBob]

Environment

What version of MekHQ does your issue apply to? 0.47.17
What operating system are you using? Windows
What java version are you using? AdoptOpenJDK version 11.0.9.1

Description

After setting my rank system to First Star League, the rank structure will eventually change back to Second Star League instead.

Note the Lieutenant rank of the First Star League, but the Rank System in the drop down says Second Star League. This is after reloading my campaign.

The drop down now shows "Second Star League" in the location that "First Star League" used to be. If I chose this option (or the one at the top of the list), the ranks change to Second Star League ranks.

Reloaded after changing to Federated Suns ranks.

Here is the text from the .cpnx file after changing to "First Star League" ranks

Here is the text from the .cpnx file after changing to "Federated Suns" ranks

The ranks are actually showing correctly when I open the campaign, but I have noticed that it will eventually switch back to the actual Second Star League ranks (I'm not sure what actually causes that to happen yet)

Files

Devestators30250409-1SL.cpnx.zip
This has a save with Fed Suns ranks and another with 1st Star League ranks.

[Windchild292]

This was a bugfix, behaviour is expected, and no new migration will be added.

[BowtieBob]

How is it expected behavior for the ranks to continually switch back to second star league on their own?

[monbvol]

This still seems to happen with some campaigns on version 0.49 but not all.

https://www.mediafire.com/file/x1sa58s1t4vw8km/SecondStarLeague.mp4/file

May come down to how the Custom ranks are handled now versus previous versions.