JCAPS to webMethods migration

Has anybody in this community got an experience on migrating integrations from JCAPS 5.x version to webMethods 7.x + versions.

I have learnt that there can not be any 1:1 migration. However ,is it possible to migrate the artifacts and assets from JCAPS to webMethods in bits and peices to expedite the migration and resuse the existing artifacts.

If yes, then what are those artifacts/assets and whats could be the standard procedure.

Any help in this would be highly appreciated.