Hi Doug MacDonald,
There is no magic "one-click" cloud migration button between Personal and Business accounts. The safest, most reliable, and fastest way to transfer your data is right inside your Windows File Explorer using the OneDrive desktop app.
Here is the exact step-by-step process:
Link both accounts: Ensure both your Personal and Business OneDrive accounts are signed in and syncing to your PC. (You will see a white cloud icon for Personal and a blue cloud icon for Business in your system tray/taskbar).
Open File Explorer: You will see two separate folders on the left navigation pane: OneDrive - Personal and OneDrive - [Your Company Name].
Copy and Paste: Open the Personal folder, select all your files (Ctrl + A), copy them (Ctrl + C), and paste them (Ctrl + V) into your Business folder. (Expert Tip: Copying is much safer than moving or dragging and dropping. If your network drops during the transfer, your original files remain perfectly safe).
Let it Sync: Wait for the blue OneDrive icon in your taskbar to finish uploading. Make sure all the files in your Business folder show a green checkmark.
Verify and Cancel: Log into the web version of your Business OneDrive to double-check that everything arrived safely. Once confirmed, you can unlink your Personal account from the desktop app (Settings > Account > Unlink this PC), and proceed to cancel your personal subscription.
If this answers your question, please click "Accept Answer".
Tracy Le.