I would be just happy to have it not advance. Currently any ship under repair or refit has time accuring on its maintance clock which doesn't make sense as there are maintance facilities present. My personal feeling is that it should be an overhaul when you put a ship in for repair and just time stands still when it is in for a refit. But having both rewind the maintenance clocks like an overhaul would work for me.
It doesn't make sense that the clock continues to advance while people are working on the ships. Yes the rewind to zero is exploitable and I did think of that. I don't think that overhaul then refit results in the clock rewinding either but I'm far from sure of that, I know you can't send ships into overhaul if members of the task group are refitting. I have several ships under refit and repair currently so I'll have a look in more detail. But I have seen exactly the same things John reports. I put a ship with zero time on the clock into refit and it comes out with time on the clock when it is done.
I keep noticing John that you and I end up running into the same issues! Must be the pre-TNT start
I keep thinking to write up some fiction but it would fairly dull reading as 50 years and basically only building, researching and exploring has been going on. Two pre-curser groups found so far (including one on a nice colony world) and about 25 systems probed with 17 fully surveyed. I've got about 10 years worth in the research queue even...trying to get a number of the racial techs up is really slow going, 15% done on 280 research/annum and that will be a good boost. I'm mainly working on a automatic mine strategy to get resources flowing back to the homeworld...the minearls are out there, I know where they are but I have to work out the best approach to getting them.
I'm pretty sure there is a difference, non-military ships seem to overhaul about 1.5 to 2 times faster then my military ships.