GA4 Migrator for Google Analytics

To replicate many of the audiences in your Universal Analytics property in a Google Analytics 4 property, use the Google Sheets add-on. It is possible to recreate audiences using the same characteristics and data from Universal Analytics and GA4. You can change the audience definitions in the spreadsheet to utilise the appropriate GA4 dimensions and metrics when the audience uses dimensions and/or metrics that are different between GA4 and Universal Analytics.

The spreadsheet contains details about each audience, such as whether or not it is open for recreation and, in the event that it isn't, why. You can change the audience conditions before creating them again because they are editable.