Version 6.1+dfsg-1 of montage is marked for autoremoval from testing on Fri 19 Sep 2025. It is affected by #1097411. It depends (transitively) on wcstools, affected by #1098084. You should try to prevent the removal by fixing these RC bugs.
Among the 9 debian patches
available in version 6.1+dfsg-1 of the package,
we noticed the following issues:
9 patches
where the metadata indicates that the patch has not yet been forwarded
upstream. You should either forward the patch upstream or update the
metadata to document its real status.