Blueprints do not remember settings in my game either. GRANTED, I am using signals from the mod LTN in my filter combinator, I wonder if that might be the issue.
Ok, I am trying to understand what part is not remembered. Is that everything or just part of it. I just retried with the current version and all of the settings and signals are preserved and blueprinted. I inspected the blueprint with https://burnysc2.github.io/Factorio/Tools/DecodeBlueprint/ and the config is in there. When I paste the blueprint, I see the new filter combinator having the settings.
My suspicion is that this is some unfortunate interaction with some other mod that touches the blueprint. If possible, can you create a minimal save and attach a link to that issue above? Right now, I don't have much to go on with as I can not reproduce the problem.
I'm trying to recreate the issue again, and I can't in a sanitary environment. Of course, it's only when there's circuit spaghetti that it shows up making it difficult to isolate. When I run across it again, I'll so if I can isolate.