Unity Export Package things go missing

Hello, I find exporting a package in Unity then importing the package into a different scene,
things are either missing or not working as they did in the original setup.
Is there a reason for this or a better method to get Unity files from one scene into another Unity scene.

Thank you

I see there is no good answer here yet, and i’d like a correct answer to this question.

I tried exporting a package by selecting the prefab, right-click and select dependencies, hold control and repeat this for other prefabs, then export to a new package (with include dependencies unchecked).
Even though i repeat it ten times in exactly the same way, my package differs in size each time, each time other things are missing, this also happens when i try this with just 1 simple prefab.

so it seems that Unity decides to include and leave stuff out at random.
I’m thinking this ain’t intended behaviour.

As it is now the export function is completely unusable, i had this problem ever since Unity 4, before i had no problems with exporting packages.

anyone knows what’s going on here ?

You did likely not use the Assets “select dependencies” function with the stuff selected you want to package before exporting and thus it didn’t transfer those things. (the one in the package export dialog doesn’t do the same thing)