Turning off the specific layer in the vport is the answer if I understand what you are after.
1) Double click within the vport in layout, or enter this command _.MSPACE
2) Then enter command _.layer
3) Select the layer and cleck the icon in "VP Freeze" column to freeze the layer. By doing this the layer won't be turned off in model space.
HTH
Please mark "Accept as Solution" and "Like" if my reply resolves the issue and it will help when others need helps.
= ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ = ♪ = ♫ =
A circle is the locus of a cursor, starting and ending at the same point on a plane in model space or in layout such that its distance from a given coordinates (X,Y) is always constant.
X² + Y² = C²