Over the years I kept upgrading my Deco Mesh, which started out with three M5 units, for better Wifi coverage for a 1000sqm area with brick and reinforced concrete walls. I kept upgrading  These days I run the system with PX50, X50 Outdoor, X75, X60 and X20 Decos with a PX50 as the Main unit to have PLC Backhaul available and there are also some  units with Ethernet backhaul in the mix.  My location is an outlying rural area with very limited ISP selection and internet speeds from my ADSL service had been rather slow @ 5 Mbs down. Recently the ISP advised that they improved the system a little and that I was supposed to get at around 10Mbs down but I still was getting only 5Mbs from the Deco system but if I checked the speed directly with the ISP modem I could get the 10Mbs. I did noticed that the PX50 main unit had over the years developed a screeching noise so to eliminate a possible defect of the PX50 I changed the main unit to one of my X75 Decos and once changed the internet speed was still only 5Mbs so I then connected a Starlink router in bypass mode instead of my regular ISP router and still only 5Mbs down max. while connected with the Main Deco Unit and I know that the Starlink can easily get 100 to over 200 Mbs down if I directly connect with the Starlink router in normal.  So somehow the Deco Mesh system is limiting the spped I can get but I have no clue why.  In addition to that I changed back to another PX50 Deco as the main unit to get back PLC backhaul  but semthing went wrong during the main unit swtich procedure with the App freezing and although I got the Deco system back up by restarting the main unit not the Deco app sometimes sometimes doesn't recognize the Deco system, even though device that has the App is connected to the Deco Wifi, and if it recognizes it the Deco system will show up OK but it shows it has having no Wifi SSID and Password for the normal and IoT Network which is not true.  

With all these issues that creeped up I think I need to get a complete reset of my Deco system with a new config from scratch but what will be the best way with as little down time as possible and without having to change the SSID and PW especially for the IoT Wifi? Furthermore is there any way to export the reserved IPs from the current config and import it to the new one without having to manually enter all of them again?