This is probably a pretty dumb question, but I cannot find the answer on this thread. Any help would be appreciated.

I booked a LH ticket (SFO > CPH) for business travel (M class). My company does not allow Y, B tickets. I would like to upgrade to Business, but the agent told me that I need to be in Y or B in order to upgrade (I don't have status with United, but I do have a bunch of miles that I can spend).

What can I do (if anything) to upgrade to Business?

- Can I go from M -> Y -> C using miles?
- Is there a FAQ on what SWU or CR1 allows (providing I have one) - will it allow this?
- Anything else I can do?

Thanks!