Navigate to the out-of-sync folder and select the folder to be merged and click Open.

A Finder window will appear, prompting you to select the Source destination.

A diskette icon will show in the top navigation bar of your Mac.

Next, launch Ultracopier from the Applications folder.

You will notice a green checkmark next to the folder name when the sync is complete. IMPORTANT: Make sure the folder has completely synced before moving to the next step.

In File Stream, select the folder you will be merging and mark it available for offline use.

The old files to the left and Google File Stream's My Drive to the right.

Once the tool is installed, open two finder windows.

Download Ultracopier Free Mac version from the official website and install it on your macOS device.

In the example below, we are copying an out-of-sync folder located in the previous Google Drive sync tool and merging it with the new business-grade Google Drive FileStream. This guide will help you merge files/folders based on the name and last modified date.

Ultracopier download