If your base is disconnected for an extended time and you need to request an update to your baseline, you can find the last baseline batch number that you imported.
The Central Engineering Authority publishes and exports baseline updates, but depending on where your base is situated, you might communicate with the CEA or with a MOB to request that they send you a baseline update. They can send all updates or you can request a specific batch number as the starting point for the update.
The current baseline batch number is displayed with the date that the batch was imported to your system.
You can communicate your current batch number to the location you are requesting the update from.