Dangers of upgrading to 0.9 in mid-mission?

[Brainlord Mesomorph]

They are developing this game faster than I can play it.

As many of you know I’m planning a massive mission to Jool. I’ve been designing and testing ships, and working out mission logistics for months. I had to redesign some things when they came out with a 0.25, so when they came out with 0.9 I didn’t migrate just yet, but now it’s been months.

Now I’m finally getting ready to launch (still in 0.25) but I’m also getting jealous of you guys with the all new features and the new biomes. So I’m wondering what could go wrong if I upgrade after departure but before arrival at Jool.

I’ve heard things about probe cores no longer having any torque, I don’t think I’m using any of them for that. I am worried Kerbels and skills.

None of my Kerbels have skills, and I’m worried that when they get there they won’t be able to change tires, move the science around or do other thing is because they don’t have the right skills.

How does that work?

Any other dangers or pitfalls?

[Red Iron Crown]

The code that manages struts and fuel lines changed significantly for 0.90, you might discover that they've disappeared from ships in flight. The old Mk3 parts were removed, so if you have vessels that use any of them they will quietly disappear. The kerbal skills thing was new for 0.90 as well, not sure what will happen to any kerbals you already have in space.

Just proceed cautiously. Back up your 0.25 game, then migrate a copy of the save over to your 0.90 install and see if it works. That way you can revert to 0.25 if things go awry.

Not sure if you're a mod user, if you are that might throw some additional stumbling blocks into the mix.

[Brainlord Mesomorph]

The code that manages struts and fuel lines changed significantly for 0.90, you might discover that they've disappeared from ships in flight.

There's my deal-breaker right there.

Or more accurately a ship-breaker! I have fleet of spaceplanes headed for Laythee. Struts and cross-fueling is an absolute necessity.

(I had enough problems with those building this stuff!)

TJust proceed cautiously. Back up your 0.25 game, then migrate a copy of the save over to your 0.90 install and see if it works. That way you can revert to 0.25 if things go awry.

I considered that, but realized things could go wrong weeks later. There are so many ships there is no way I could test everything.

Thanks.