Importing step into SW2019?

Hi all,

Can anyone tell me what happened between 2017 and 2019 regarding step files?

It used to look like this:

Now it looks like this?

... and furthermore - my parts suddenly got a line through like they are divided in two but they are not, I still got only 1 solid body.

They used to look like this.

SolidworksImport/export