They are not identical but close enough that the 1200 should be usable.
The mounting points are compatible, AFAIK.
Here's the data from Öhlins for the 6th Gen:
And for the 1200:

- Longer OAL will raise the back about 1/2".
- Shorter stroke might reduce wheel travel a bit but I don't see that as a real issue.
- Slightly heavier spring which is a boon unless you are a horse jockey.