Hi @Hadiyah-Saeed Following the response from the previous post, please keep in mind, the table export in the Data Admin module was always a beta feature in a custom module (not part of the core). It was designed a long time ago and never guaranteed to always work for all future importers. Especially complex ones, as the Timetable - Complete is the most complex importer we currently have.
That said, I have taken a look and made some adjustments to the exporter, and the Timetable - Complete export is now working in Data Admin v1.9.00. Bear in mind, it is still quite experimental, takes a lot of memory to run (since it’s exporting across four different tables), so I cannot guarantee it will always work.