Sync data from Ignition Edge 8.3.1 to Ignition 8.1.51

Ignition
1

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 :slight_smile:

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.
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LegacyHistorianSyncable 09Jan2026 10:07:51 Remote historian sink isn't accepting data at this time. Likely that the remote gateway is unavailable.
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Alarm Journal Sync comes up with an error on both sides.
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Edge:
Error sending Edge alarm journal data to remote server [DEV01]
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Main Gateway:
Intent 09Jan2026 10:11:50 Unhandled Intent failure. Call originated from 'SL03-Edge'
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2

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.

3

Ok, thx for your response.

4

Iā€™m currently running multiple Ignition Edge gateways (v8.1.49) connected to a central Ignition Gateway (also v8.1.49).

Iā€™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?

5

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.

6

Thank you for your response @pturmel