nnInteractive does not keep prior nonAI segmentation

[boskar]

Hello,

I've been using itksnap for quite a long time for past projects ( https://www.sciencedirect.com/science/article/pii/S0010482523000689 included), and I've just migrated in current, AI enabled version.
As I collaborate with a few friends I've set up client-server version.
Unfortunately, when I open the study, then the segmentation, and I try to add a lesion to an already segmented image using AI brush all the prior lesions disappear.
If I switch between brush modes and use non-AI brushes between AI and AI, the non-AI are not preserved.

Maybe I'm using wrong version or I've misconfigured something, but it is wrong.

[pyushkevich]

Hi Boskar, I am still working out the best way to design the UI to add additional objects. For now, each object you want to add should have a separate label. Please let me know if that works in your scenario. Thanks! Paul

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On Tue, Jan 6, 2026 at 6:37 AM boskar ***@***.***> wrote: *boskar* created an issue (pyushkevich/itksnap#217) <#217> Hello, I've been using itksnap for quite a long time for past projects ( https://www.sciencedirect.com/science/article/pii/S0010482523000689 included), and I've just migrated in current, AI enabled version. As I collaborate with a few friends I've set up client-server version. Unfortunately, when I open the study, then the segmentation, and I try to add a lesion to an already segmented image using AI brush all the prior lesions disappear. If I switch between brush modes and use non-AI brushes between AI and AI, the non-AI are not preserved. Maybe I'm using wrong version or I've misconfigured something, but it is wrong. — Reply to this email directly, view it on GitHub <#217>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAJPEW456OHTVUHSYA6TIZ34FOM7PAVCNFSM6AAAAACQ2LKGNOVHI2DSMVQWIX3LMV43ASLTON2WKOZTG44DIOBUGA4DCOI> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[boskar]

I will probably use other label for the lesions and relebel them later effectively merging AI generated annotations and prior manual annotations, but it's a workaround (relabeling everything from class X to class Y would be nice though).
By intuition I'd expect to be able to use any of the "brushes" in any order without impacting prior work, like it used to work.
Anyway it's a huge improvement, thank You!

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Best!
Oskar