# Sync data from Ignition Edge 8.3.1 to Ignition 8.1.51 **URL:** \ **Category:** Ignition\ **Created:** [January 9, 2026, 9:14am UTC](https://forum.inductiveautomation.com/t/sync-data-from-ignition-edge-8-3-1-to-ignition-8-1-51/113174 "2026-01-09T09:14:58Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Hans\_Olav\_Ronning](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/hans_olav_ronning/32/44018_2.png) [@Hans\_Olav\_Ronning](https://forum.inductiveautomation.com/u/Hans_Olav_Ronning)\ **Post date:** [January 9, 2026, 9:14am UTC](https://forum.inductiveautomation.com/t/sync-data-from-ignition-edge-8-3-1-to-ignition-8-1-51/113174/1 "2026-01-09T09:14:58Z")
Hi all Are there any known issues with History Sync and Remote Alarm Journal in a setup with Ignition Edge 8.3.1 to a gateway with 8.1.51 or is it simply me being unable to make it work? I hope its all about me 🙂 The outgoing connection works ok (according to the Network Live Diagram) History sync comes back with a warning on Edge side, but nothing on the main gateway. \_\_\__**\_ LegacyHistorianSyncable 09Jan2026 10:07:51 Remote historian sink isn't accepting data at this time. Likely that the remote gateway is unavailable. \_**_\_ Alarm Journal Sync comes up with an error on both sides. \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Edge: Error sending Edge alarm journal data to remote server [DEV01] \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Main Gateway: Intent 09Jan2026 10:11:50 Unhandled Intent failure. Call originated from 'SL03-Edge' \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [January 9, 2026, 1:23pm UTC](https://forum.inductiveautomation.com/t/sync-data-from-ignition-edge-8-3-1-to-ignition-8-1-51/113174/2 "2026-01-09T13:23:38Z")
You cannot. Syncing from 8.3 Edge to 8.1 is not supported. Upgrade your central Ignition before you upgrade any Edge instances that communicate with it. ---
**Author:** ![Hans\_Olav\_Ronning](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/hans_olav_ronning/32/44018_2.png) [@Hans\_Olav\_Ronning](https://forum.inductiveautomation.com/u/Hans_Olav_Ronning)\ **Post date:** [January 9, 2026, 1:47pm UTC](https://forum.inductiveautomation.com/t/sync-data-from-ignition-edge-8-3-1-to-ignition-8-1-51/113174/3 "2026-01-09T13:47:11Z")
Ok, thx for your response. ---
**Author:** ![pratik.patel.scada](https://avatars.discourse-cdn.com/v4/letter/p/f0a364/32.png) [@pratik.patel.scada](https://forum.inductiveautomation.com/u/pratik.patel.scada)\ **Post date:** [January 10, 2026, 10:27pm UTC](https://forum.inductiveautomation.com/t/sync-data-from-ignition-edge-8-3-1-to-ignition-8-1-51/113174/4 "2026-01-10T22:27:47Z")
I’m currently running multiple Ignition Edge gateways (v8.1.49) connected to a central Ignition Gateway (also v8.1.49). I’m considering upgrading the central gateway to version 8.3.1, while keeping the Edge gateways on 8.1.49 for now. I found gateway area network shows the security vulnerability warning, Are there any potential compatibility issues or functional limitations I should be aware of with this mixed-version? ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [January 10, 2026, 11:16pm UTC](https://forum.inductiveautomation.com/t/sync-data-from-ignition-edge-8-3-1-to-ignition-8-1-51/113174/5 "2026-01-10T23:16:05Z")
Just that you have to allow Java Serialization in v8.3, since that is what v8.1 uses. Java Serialization is being phased out (replacing with Protobuf) as a proactive security measure. ---
**Author:** ![pratik.patel.scada](https://avatars.discourse-cdn.com/v4/letter/p/f0a364/32.png) [@pratik.patel.scada](https://forum.inductiveautomation.com/u/pratik.patel.scada)\ **Post date:** [January 11, 2026, 5:43pm UTC](https://forum.inductiveautomation.com/t/sync-data-from-ignition-edge-8-3-1-to-ignition-8-1-51/113174/6 "2026-01-11T17:43:52Z")
Thank you for your response @pturmel