We don't have plans to make the Auto Insights Uploader compatible with versions before 21.2.
The workaround is to use an intermediary database that Auto Insights can be configured to connect to directly and pull in the data i.e. the Designer workflow outputs the data to a MySQL database, Auto Insights is configured to import data from the MySQL database on a schedule.
Some reading in our helpdesk may be useful to you here:
https://helpdesk.autoinsights.alteryxcloud.com/en/articles/3266434-options-for-ingesting-data-into-a...
