How to get opensuse-migration-tool to wait for response?

I’m trying to go from Leap 15.6 to 16.0 using the opensuse-migration-tool. (The installer seems quite inept at maintaining a dual-boot system.) The tool is installed and repositories updated. I started the tool and it got to

2076 packages to upgrade, 140 to downgrade, 1058 new, 880 to remove, 46  to change vendor, 12 to change arch.

Package download size:    3.21 GiB

Package install size change:
              |      8.18 GiB  required by packages that will be installed
   314.0 MiB  |  -   7.88 GiB  released by packages that will be removed

    Note: System reboot required.

Backend:  classic_rpmtrans
Continue? [y/n/v/...? shows all options] (y): ?

I said yes and it downloaded 3274 packages, then

Checking for file conflicts: ..............................................................................................................................................[error]
Detected 7 file conflicts:

File /usr/lib64/gstreamer-1.0/libgstamrnb.so
  from install of
     gstreamer-plugins-good-1.26.2-160000.2.2.x86_64 (repo-oss (16.0))
  conflicts with file from package
     gstreamer-plugins-ugly-codecs-1.22.0-150500.1.pm.2.x86_64 (@System)

File /usr/lib64/gstreamer-1.0/libgstamrwbdec.so
  from install of
     gstreamer-plugins-good-1.26.2-160000.2.2.x86_64 (repo-oss (16.0))
  conflicts with file from package
     gstreamer-plugins-ugly-codecs-1.22.0-150500.1.pm.2.x86_64 (@System)

File /usr/lib64/gstreamer-1.0/libgstasf.so
  from install of
     gstreamer-plugins-ugly-1.26.2-160000.2.2.x86_64 (repo-oss (16.0))
  conflicts with file from package
     gstreamer-plugins-ugly-codecs-1.22.0-150500.1.pm.2.x86_64 (@System)

File /usr/lib64/gstreamer-1.0/libgstdtsdec.so
  from install of
     gstreamer-plugins-bad-1.26.2-160000.2.2.x86_64 (repo-oss (16.0))
  conflicts with file from package
     gstreamer-plugins-bad-codecs-1.22.0-150500.1.pm.4.x86_64 (@System)

File /usr/lib64/gstreamer-1.0/libgstresindvd.so
  from install of
     gstreamer-plugins-bad-1.26.2-160000.2.2.x86_64 (repo-oss (16.0))
  conflicts with file from package
     gstreamer-plugins-bad-codecs-1.22.0-150500.1.pm.4.x86_64 (@System)

File /usr/lib64/gstreamer-1.0/libgstsiren.so
  from install of
     gstreamer-plugins-bad-1.26.2-160000.2.2.x86_64 (repo-oss (16.0))
  conflicts with file from package
     gstreamer-plugins-bad-codecs-1.22.0-150500.1.pm.4.x86_64 (@System)

File /usr/lib64/gstreamer-1.0/libgstvoamrwbenc.so
  from install of
     gstreamer-plugins-bad-1.26.2-160000.2.2.x86_64 (repo-oss (16.0))
  conflicts with file from package
     gstreamer-plugins-bad-codecs-1.22.0-150500.1.pm.4.x86_64 (@System)

File conflicts happen when two packages attempt to install files with the same name but different contents. If you continue, conflicting files will be replaced losing the previous content.
Continue? [yes/no] (no):

I entered “no” (big mistake) and got

Problem occurred during or after installation or removal of packages:
Installation has been aborted as directed.
History:
 - ABORT request: 
Please see the above error message for a hint.
Warning: Enforced setting: $releasever=16.0
Refreshing service 'openSUSE'.
Loading repository data...
Reading installed packages...
Warning: You are about to do a distribution upgrade with all enabled repositories. Make sure these repositories are compatible before you continue. See 'man zypper' for more information about this command.
Computing distribution upgrade...

I restarted the opensuse-migration-tool and this time when it did the file conflict check, at the line

Continue? [yes/no] (no):no, “no” was already entered and enacted, which again aborted. I had no chance to reply “yes” to the Continue query.

I deleted opensuse-migration-tool and reinstalled it, hoping that would clear the stored response, but the “no” is always entered and enacted.

How can I get opensuse-migration-tool to wait for a new response at the Continue? line?

You cannot. It runs zypper in non-interactive mode, and if it fails it runs it again in interactive mode but does not check for success and continues with follow up actions.