I need help with some DLCs in ETS2, does anyone know?

I've been playing ETS2 for many years and have purchased a few DLCs to enhance the gaming experience.

I got the Legendary Edition for my birthday and I'm not sure if it will work because I already have the Heavy Cargo Pack Edition and other DLCs, and I'm wondering if if I install the Legendary Edition on Steam now, Steam will deactivate the other DLCs and delete the saved games because I basically bought a completely different edition of the game.

This may be a stupid question, but this actually happened in an older game I played and I don't want it to happen again.

Thanks in advance to anyone who knows about this