I know most people are just using Samsung Notes, but I had the app for SNote on my Note 8 – with the weekly planner template – and when I switched to the Note 20 Ultra, my "note" were loaded into the Samsung Notes as @ pictures. At least I still had my info. I tried to reload the apk I used on my Note 8 – it said it installed but was blank. I searched and found an apk listed on Sammobile, that was loaded there 2 months ago. I installed it on my phone and poof it is there!! It even took the info off the saved files from the SSwitch. No new templates, but I can copy over old ones. Hope this helps anyone else with this issue!