Problems with Splines

Hi everybody, new UE5 user here.
Using landscape for the first time and having some trouble with splines.
More specifically, when I create a Spline in landscape mode (as one does), whenever I leave landscape mode or select play, the spline disappears. Is there something I’m missing?
Thanks for any help in advance!
Your Friendly Neighbourhood UnrealEngine5Noob

Hey there @Subl7mo! Welcome to the community! Are you intending to create and use Landscape Splines or regular blueprint splines?

Hey! I want to use splines for roads (I started doing this in landscape mode) and also for quickly and easily placing foliage within a splines boundaries. Any help on how to do both of these would be greatly appreciated!