I'm sorry - that wasn't very clear.
In the first case (on Windows. Unix or MacOS will be different, but the idea is the same)
My SlickEdit config is in C:\Users\jim\Documents\My SlickEdit Config\18.0.1
I can change "18.0.1" to "18.0.1.bak" and I'll get a clean config, but all my customizations go away.
If I change "vrestore.slk" to "vrestore.slk.bak", it won't open the files I had open, but my open box config, search box, etc., are all gone.
In theory, you can edit vrestore.slk to remove the files from load, but I just tried it & something wasn't right. So not recommended.
(edit - changed to "vrestore.slk.bak")