Ships sunk changes after exit to Windows

After Saving missions during a patrol I've monitored the ships sinking log in SaveData.clg (documents folder). This log accurately accumulates the ships sunk and tonnage, but when I exit to Windows after a save, and then come back, start the game, and reload that save, I see that the number of ships and therefore tonnage has decreased when I look on the screen following Exit to Main. Is there a plausible explaination for this or am I experiencing bad saves again? My MODs are listed as follows;
TriggerMaru_Overhaul_2
TMO_20_Beta_update
Convoy Routes TMO 2.0
SCAF for TMO_2
MaxOptics IV for TMO_2
3000 Yard Bearing Tool (1280x)
EAXsoundsim_without_WebstersManeuver_TMO19
Return for Creaks and Man the deck(flak) gun
Webster's Smaller Rain for TMO
TGT AOB TO PK FIX - TMO
TMO_Easier_AI
IJN_Rad_Fix_for_TMO2_betaupdate
Map Colour Scheme 3
TDW_Ship_Plane_Fire_Damage_v1_3_SH4
Splash_effect_DC_bombs_bullets_shells_1.0_for_TMO2
TheDarkWraith_DC_Water_Disturbance_v2_0_SH4

BTW, the ships sunk per SaveData.clg does not reflect what is displayed on the Exit to Main display, so where does the Main display get the info from?