Mid trip deviations are being denied when upgrading a ticket from Biz to FC because the FC fare is beyond an arbitrary, made up percentage limit by management. Really?

After dealing with a couple years of lockdowns, lengthy immigration procedures, company jumpseating, swabbings, immunization politics, hotel isolation, room service menus, etc., you would think that we should be able to spend our enormous deviation banks on a simple upgrade to FC. Pathetic.