Can we add/edit static meshes with level streaming always loaded?

Hello Epic community ! I’m in developing stage of my project and I was wondering if I could add/edit static meshes to my landscape that is composed of many levels (I use level streaming). Basically my question is if I’ll set all my levels on always loaded in editor and I’ll start adding static meshes and edit the landscape will all of this be saved correctly in each level ? I mean after I switch to blueprint streaming again all of my changes will be there ? If someone have an answer please let me know, I will highly appreciate it. Thank you, and I wish you all the best !