Guided Missile Maintenance Cost

[Jaybe]

Last night (uh, 2 bleeping' AM this MORNING ) I was finishing up a game ... space race victory by one part
... and decided to delete a guided missile unit. My net income seemed to shoot up by 10gpt so I tried it again, only to find that it increased by 20gpt (which was confirmed by 3 additional tests).

I thought the maintenance cost was supposed to be ONE gpt for guided missiles.

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Glitch in my game database or documentation glitch (or short circuit in my own biological memory)?
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Addendum: Large map, epic speed, prince difficulty.
Addendum2: Guided Missile maintenance cost is not listed in production or tech tree tooltips; which I have noticed for so long I presume it has already been noted.

 

[Thalassicus]

Guided missiles are slightly buggy because of changes Firaxis made to city defenses over the summer. I don't remember the details, and the units are so late in the game it hasn't been a major priority. The problems are only visual.