The PIrate faction's diplomacy value for the player can become corrupted when loading save files

Repro: 3/3 (one game though, I have not played through again to reproduce again)

1. Start a game (I was Unfallen with Normal pirates and enemies)

2. Make peace with PIrates for the whole game (I played until turn 92)

3. Note that the AI will begin to compete and steal the PIrate's friendship from you, and it will become wary again (by design)

4. Find a round in which this happens (for me it's round 93)

5. Reload to the beginning of the previous round using Autosave

6. Observe that the pirates are still "Cordial" to the player

7. Play the entire round (you can see exactly what I did via my save files)

8. Save the game to a manual save file 

9. Open Pirate diplomacy and notice it is still "Cordial"

10. End the Turn

11. Note that the pirates are now "Wary" (probably an AI paid them)

12. Reload the save that was made in step 8

13. Open the Pirate Diplomacy screen

RESULT: Pirates are "Wary"

EXPECTED: Pirates should be "Cordial" because that is the state they were in when the savefile was created

This would be easier to diagnose as a player if the numerical value of the pirate sentiment towards the player were made visible in the tooltip, but I believe this is the correct repro.  There is some RNG of course, since you never know when the AI will take over the pirate friendship from the player, making this difficult to reproduce. It would be interesting if this were indicative of a larger issue, something about the game's perceived turns getting out of sync (and this isn't actually due to another faction but because of incorrect value for pirate relationsip decay).

I am writing this from my laptop, but I'll attach the save files from my desktop later when I get access to it.