I suggest that the cable connection that you used is not relevant. You've either set, or imported, settings that don't retain passwords etc.
I moved from XP SP3 to 7/64 using the cable and the associated M/S software. All worked fine.
I don't know what explorer you are using - FF, IE, Chrome, but they all have tools that let you decide what they will remember.
I have my FF set to remember nothing, ever, and if the programme does remember anything, I get CCleaner to remove it.
FF has tools/privacy. Settings are in there. Don't know about the others.