# Loss of Session Custom Properties in Perspective – Ignition 8.1.41

**URL:** <https://forum.inductiveautomation.com/t/loss-of-session-custom-properties-in-perspective-ignition-8-1-41/106318>\
**Category:** Ignition\
**Tags:** ignition81, perspective\
**Created:** [May 16, 2025, 6:48am UTC](https://forum.inductiveautomation.com/t/loss-of-session-custom-properties-in-perspective-ignition-8-1-41/106318 "2025-05-16T06:48:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Anantharaman\_Nagaraj](https://avatars.discourse-cdn.com/v4/letter/a/9fc29f/32.png) [@Anantharaman\_Nagaraj](https://forum.inductiveautomation.com/u/Anantharaman_Nagaraj)\
**Post date:** [May 16, 2025, 6:48am UTC](https://forum.inductiveautomation.com/t/loss-of-session-custom-properties-in-perspective-ignition-8-1-41/106318/1 "2025-05-16T06:48:26Z")

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Hi everyone,

I'm currently working on a Perspective project using Ignition version 8.1.41, and I've run into an issue where session custom properties are being lost intermittently.

In my setup, I'm storing some important values under `session.custom`, but they occasionally disappear—especially after a refresh or navigating between views. These values are not being reset explicitly anywhere in the project, and I’ve double-checked that no scripts or bindings are modifying or clearing them unintentionally.

Has anyone else encountered this behavior in 8.1.41?  
Is there something I might be missing regarding how session custom properties persist across views or sessions?

Any suggestions, best practices, or workarounds would be appreciated.

Thanks in advance!  
@inductiveautomation1@inductiveautomation2 @paul-griffith @cmallonee

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**Author:** ![Aiasa21](https://avatars.discourse-cdn.com/v4/letter/a/aeb1de/32.png) [@Aiasa21](https://forum.inductiveautomation.com/u/Aiasa21)\
**Post date:** [May 16, 2025, 9:13am UTC](https://forum.inductiveautomation.com/t/loss-of-session-custom-properties-in-perspective-ignition-8-1-41/106318/2 "2025-05-16T09:13:41Z")

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Should have been fixed in 8.1.47

> **[Ignition Release Notes for Version 8.1.47 | Inductive Automation](https://inductiveautomation.com/downloads/releasenotes/8.1.47)**
>
> Fixes, changes and features in Ignition 8.1.47

> [@Custom Session Properties Gone](https://forum.inductiveautomation.com/t/custom-session-properties-gone/72785/22):
>
> I had this issue when importing my project to a new PC. When I opened the designer sometimes Custom props would be gone, and sometimes the title menu would be gone. I had to re-open the designer multiple times without saving in order to get a 'good load' then saved, and the problem hasn't seemed to come back. Unfortunately, I originally made a save prior to realizing that issue was occurring, and it messed things up royally, making me have to restore back up again. If anything, this taught me th…

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**Author:** ![Anantharaman\_Nagaraj](https://avatars.discourse-cdn.com/v4/letter/a/9fc29f/32.png) [@Anantharaman\_Nagaraj](https://forum.inductiveautomation.com/u/Anantharaman_Nagaraj)\
**Post date:** [May 16, 2025, 9:24am UTC](https://forum.inductiveautomation.com/t/loss-of-session-custom-properties-in-perspective-ignition-8-1-41/106318/3 "2025-05-16T09:24:53Z")

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Thanks for the update.

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**Author:** ![Luis\_Fernando\_Torres](https://avatars.discourse-cdn.com/v4/letter/l/58956e/32.png) [@Luis\_Fernando\_Torres](https://forum.inductiveautomation.com/u/Luis_Fernando_Torres)\
**Post date:** [June 5, 2026, 4:20pm UTC](https://forum.inductiveautomation.com/t/loss-of-session-custom-properties-in-perspective-ignition-8-1-41/106318/4 "2026-06-05T16:20:29Z")

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I've had the same issue. This time even Session Props were wiped out from my project. One thing that helped me was that we have the project inherit settings from a template master, I opened the template master saved it and then all my properties came back without needing to restore back up.