migrate data to a new profile

[Admini]

thank you very much, i did what you had said and everything has been migrated, except EXTENSION DATA. it will be a long task to set every extension option to back how it was. can you tell me which files to copy over to achieve this? thanks in advance

You can try copying these directories, but I am not sure your extension settings can fully restore because there is no standard methods for extensions to save their settings.
User Data\Default\Local Storage
User Data\Default\File System
User Data\Default\Local Extension Settings
User Data\Default\Managed Extension Settings