Authenticator backup use company account

It really doesnt help as the backup and restore on the Microsoft Authenticator is fundamentally broken for IT Admin use regardless of the requirement for a personal account for backups. The backup will only work for up to around 60 accounts before it just stops backing up. There is no fix or workaround for this, Microsoft has been aware of it for years and has done nothing. There needs to be either the ability to back up hundreds or even thousands of accounts, either automatically or a one off dump to OneDrive (business) or the ability to do a direct transfer from one device to another like Google Authenticator can do. I have been forced to maintain a second device and duplicate MFA registration on each of them rather than risk losing access to every account I have added in the past 18m or just use insecure SMS.