# Compatibility Problems with v1.39

Problems noted with upgrading from firmware and Alarmware™ version 1.39:

- The Log File / Printer groups are not preserved and the groupings are not cleared out in the old Log File / Printer destination slot.
- The v1.39 notification and log filters have changed and are mapped as reasonable.
- Flow control is changed from XON/XOFF to NONE.

To be certain that the configuration was converted properly, operator should verify the following:

- Grouping for all destinations
- Filtering for all destinations
- Filtering for Log File and Printer devices
- Set Printer Flow control to desired setting.