No problem. Let me know if it worked. Regarding the ativation, once the upgrade has been done, you can either use kms tools as KMS_VL_ALL which is available here or use a third party tool which is not allowed here and which allows to get win10 activated with digital license in one click but you can find it easily by googling (it's called MAS, just type "massgravel" and you'll find it)
Looking for help after I tried to follow these instructions and didn't get setup option 'Keep personal files and apps'. It is greyed out and only the options to Keep personal files or Nothing is presented. I did the registery edit of EditionID to Enterprises from EnterpriseS and ProductName to Windows 10 Enterprise from Windows 10 LTSC 2019. My registry values were slightly differnt to start with. I have US-EN version of LTSC 1909 ISO and the current installed version is EN-GB. Could this be the cause of problem ? How can i upgrade the language to EN-GB or where to get correct ISO ?