You can filter the files before uploading to Azure using the "Filter Files by adding SOQL filter conditions" feature in real-time migration. Follow these steps:
- Go to the "Migrate Files/Attachments To Azure" Tab.
- Look for the "Migrate Real-Time" section.
- Under the "Migrate Real-Time" section, you will find the option for "Filter Files by adding SOQL filter conditions" for both files and attachments.
- Enter the query in the box and click on the "Save File Settings" button.
- With this SOQL filter now only filtered files will upload to Azure