NSL6.1 Plugin for iManager 2.6

As in my existing eDirectory 8.8.1, I have been using the SSO 2.6
(6.0SP1) plugin, and I have been able to administrator the NSL
designated container and user, including the application definition.

I had tested and would need to migrate all the user into 6.1, and have
been trying to use the new SSO 6.1 plugin. I have performed the schema
upgrade and also assigned the relevant right to the container by using
the ndsschema.exe.

However, as of now, I can add in the application definition, but cannot
edit the application definition at all. Can the NSL plugin (out of the
box) work with iManager 2.6? Or, should I use 2.7 to make it work?