# Bug using system.tag.copy in Ignition 8.3

**URL:** <https://forum.inductiveautomation.com/t/bug-using-system-tag-copy-in-ignition-8-3/110967>\
**Category:** Ignition\
**Tags:** scripting\
**Created:** [September 25, 2025, 10:55am UTC](https://forum.inductiveautomation.com/t/bug-using-system-tag-copy-in-ignition-8-3/110967 "2025-09-25T10:55:16Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![BVTV](https://avatars.discourse-cdn.com/v4/letter/b/e5b9ba/32.png) [@BVTV](https://forum.inductiveautomation.com/u/BVTV)\
**Post date:** [September 25, 2025, 10:55am UTC](https://forum.inductiveautomation.com/t/bug-using-system-tag-copy-in-ignition-8-3/110967/1 "2025-09-25T10:55:16Z")

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I found a bug in Ignition 8.3 when using system.tag.copy.

How i produced the bug:

1. I have a UdtInstance called UdtInstanceA, and it has a tag inside it called testTag. i have set testTag.enabled = **False**

2. I then run: system.tag.copy(UdtInstanceA,UdtInstanceB)

3. UdtInstanceB.testTag.enabled is now equal to **True** , so this property has not been copied over to the new one.

It did not work this way in earlier versions.

Ignition version: 8.3.0

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**Author:** ![anjoroge](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/anjoroge/32/6698_2.png) [@anjoroge](https://forum.inductiveautomation.com/u/anjoroge)\
**Post date:** [September 25, 2025, 10:43pm UTC](https://forum.inductiveautomation.com/t/bug-using-system-tag-copy-in-ignition-8-3/110967/2 "2025-09-25T22:43:58Z")

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> [@BVTV](#):
>
> I found a bug in Ignition 8.3 when using system.tag.copy.
> 
> How i produced the bug:
> 
> 1. I have a UdtInstance called UdtInstanceA, and it has a tag inside it called testTag. i have set testTag.enabled = **False**
> 2. I then run: system.tag.copy(UdtInstanceA,UdtInstanceB)
> 3. UdtInstanceB.testTag.enabled is now equal to **True** , so this property has not been copied over to the new one.

It seems like there is a problem with how ignition is migrating UDT instances with tags inside them using system.tag.copy will replicate it on my end and if it an issue write up a ticket for it. thanks for the info

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**Author:** ![anjoroge](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/anjoroge/32/6698_2.png) [@anjoroge](https://forum.inductiveautomation.com/u/anjoroge)\
**Post date:** [September 26, 2025, 5:35pm UTC](https://forum.inductiveautomation.com/t/bug-using-system-tag-copy-in-ignition-8-3/110967/3 "2025-09-26T17:35:33Z")

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Hi BVTV was able to replicate the issue where when using the system.tag.copy function some the configurations are not being moved over. This issue is also in 8.1 will write up a ticket for it so it can be looked at and fixed. Thanks for the info

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**Author:** ![BVTV](https://avatars.discourse-cdn.com/v4/letter/b/e5b9ba/32.png) [@BVTV](https://forum.inductiveautomation.com/u/BVTV)\
**Post date:** [September 29, 2025, 9:08am UTC](https://forum.inductiveautomation.com/t/bug-using-system-tag-copy-in-ignition-8-3/110967/4 "2025-09-29T09:08:01Z")

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Great! Thank you