Losing Experience from Upgrades!??!?

[Capeachy]

Last night I tried upgrading my Aestrom carrier.

I clicked on upgrade the reactor once and then assigned engineers to "repair" the reactor. I then clicked on the upgrade button a second time to check on the progress.

Lo and behold, my experience points fell through the ground... -4900. Ouchies. Anybody else lose xp while upgrading? Or am I just dumb

[TopSpeed]

I've never seen experience point loss for upgrading. However, you lose experience for friendly losses in the zone you are in. I would venture to guess you lost experience due to a combat you didn't see rather than upgrading.

[Supreme Cmdr]

Its rubbish