# How to import UDT definition without removing any members not included in import file **URL:** \ **Category:** Ignition\ **Tags:** ignition81, vision\ **Created:** [June 27, 2024, 9:46pm UTC](https://forum.inductiveautomation.com/t/how-to-import-udt-definition-without-removing-any-members-not-included-in-import-file/92504 "2024-06-27T21:46:18Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Blaze](https://avatars.discourse-cdn.com/v4/letter/b/e274bd/32.png) [@Blaze](https://forum.inductiveautomation.com/u/Blaze)\ **Post date:** [June 27, 2024, 9:46pm UTC](https://forum.inductiveautomation.com/t/how-to-import-udt-definition-without-removing-any-members-not-included-in-import-file/92504/1 "2024-06-27T21:46:19Z")
Hello Gentlemen, I have a client with whom I have 2 very very similar projects, differences being that a few valve/transmitters have been added in the second project. I ended up completing the first project, then cloning it with the differences in valves/temperature transmitters, etc. ![Screenshot 2024-06-27 141223](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/5/15b6f52e261c58a3a185d1026723f429748dc320.png) ![Screenshot 2024-06-27 141250](https://us1.discourse-cdn.com/inductiveautomation/original/3X/3/3/33e0a8d820f94d1742d61dc7d6fecfb686b816fd.png) The Client now wants some new QT960 ... QT964 transmitters added. I have a MS\_Base UDT Definition in both projects, and have added an additional 5 QT960 - QT964 UDT members in the first project. I want to be able to export this UDT Definition on the first project, and import only the new QT960 - QT964 while not removing some extra valves in that MS\_Base on the second project. When I try to import the MS\_Base UDT, it will delete/remove some UDT members that only exist in the second project. I would like to match the other QT950 .. QT959 already in MS\_Base ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/2/e2d2f9d965817c3a186dcc51eadebf4087100ee8.png) Is there an elegant way to selectively add some UDT members via import while not removing other needed UDT members? ( i.e. a couple extra valves ) I am using Ignition Vision v8.1 . I appreciate any help. Cheers ---
**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\ **Post date:** [June 27, 2024, 10:01pm UTC](https://forum.inductiveautomation.com/t/how-to-import-udt-definition-without-removing-any-members-not-included-in-import-file/92504/2 "2024-06-27T22:01:02Z")
Not via any inbuilt method. what I'd do is to: - copy the tags from the UDT def in the tag browser into the standard tags into a new folder - Import the changed UDT into a new UDT def. - Copy those tags back into another new folder in the standard tags. - Copy those tags' json and import into the first new folder. That should replace all of the existing matching tag defs, add new ones, and keep any unmatching ones. - Then you can copy those tags back to the UDT def... There might be some steps in that that can be shorter as I'm not at my laptop atm ---
**Author:** ![Blaze](https://avatars.discourse-cdn.com/v4/letter/b/e274bd/32.png) [@Blaze](https://forum.inductiveautomation.com/u/Blaze)\ **Post date:** [June 27, 2024, 10:17pm UTC](https://forum.inductiveautomation.com/t/how-to-import-udt-definition-without-removing-any-members-not-included-in-import-file/92504/3 "2024-06-27T22:17:38Z")
Thank you. That method worked for me. I wonder if IA will add that option when importing in the future i.e. keep existing members that were not included in the import file.