Changing Weapons with Krastorio2s altered Fusionreactor deletes the Fusionscells i have inserted into the reactormodules.

Ok. What my sleepy self tried to say, was that your mod deletes fuel in modules, thus making burnergenerators or K2s Fusionreaktores ueseless when you change weapons.

Since K2 also changed the spidertron to need fuel (not your versions, just the orginal) , whould it be nice if you could consider that, too.

Thanks for the feedback. I've got some plans to make transferring inventories more robust in the future, so I'll definitely keep these examples in mind.
The point about my spidertrons not inheriting K2's is good to know. I think that I'll move my modifications to data-updates so that I can build on what other mods do to spidertron.

I've fixed the fuel deletion in Spidertron Engineer, and since that part of the code is basically the same, it will probably be fixed here in a couple of days.

Fixed in 1.1.2 - out now