It might be useful to understand the exact reason of exporting bookings. Indeed, there could be various options to export a snapshot at a specific moment in time, such as DMS Automation Script, DMS Reports, etc.. (see above)

Furthermore, it could surely also be of interest to mention following roadmap features:
1. SRM API: ability to query SRM Booking and Resource information via an API.
2. Dashboards: dashboard component listing bookings in real-time with export possibility.

Note: both are still roadmap features and no confirmed timing has been put.