X1-Carbon - Why is that outer do that do that?

The 3mf you downloaded from Makerworld.
I simply downloaded it, sliced as is, and printed on my daughters A1 Mini. Admittedly I did it in one color.

If you printed it as it was meant to be printed then I’d look at the silk filament. That tends to be a pain for some. Personally never use it so I can’t offer advice there.

Judging by the settings from earlier I believe you made some changes that have had a negative impact on the print. Start over by loading the file, selecting colors and sending it to print. Maybe change to the correct printer and nozzle, nothing else.