Reinstalling with different settings?

[jedibob5]

When I installed XC I forgot to tick the option box for land bridges, and now I feel like enabling them. If I reinstalled XC right now with different settings, would I lose my savegames? And if they don't get lost (or I just back them up before reinstall), would they automatically convert to having land bridges, or would it only apply for new campaigns?

[Zarax]

If you want to reinstall with land bridges you won't loose your saves as long as the other options are the same, however the landbridges will appear only on new campaigns.