Transfer Hosting To New Server - Disabling Apache ASP Support

I'm working on transferring my Hostings to a new server, but ran into some problems.

Transferring the data from one Plesk 12 server to another works quite well using the migration manager, although you have to create the service plans by hand as well as you need to work through the server configuration parameters.

After re-creating the service plans I wanted to link and sync them to the subscriptions, but unfortunately I have no success to do so, because everytime I try to get them in sync, it tells me that Apache ASP support is enabled for the subscription and needs to be disabled. Plesk then tells me, the setting is disabled, but next time you try to sync the subscription... ASP is back enabled.

Problem is that on the old server I had Apache ASP enabled and used it in my hostings.

I tried to solve the problem using the command line tools, but "./subscription -u domain.name -asp false" returns "SUCCESS: Update of domain 'domain.name' completed.", but you can guess, same problem.

As a last resort I disabled Apache ASP support for my hostings on the old server, deleted everything on the new one and I got no warnings before migrating about the missing ASP feature.

But unfortunately this procedure ended up with the same problem as before.

Is there a way to remove the ASP support from the existing subscriptions?