HI @Southsayer, 

Confirm if my understanding is correct for your question above.

You want to create a business rule on run condition (when state of the change changes from scheduled to implement). This business rule should then redirect the user to a new problem form. 

My questions for clarification are:

Q1. What fields do you want to populate when you open a new problem record.

Q2. Where do you intend to open the new problem record in same window or in new window.

Suggestions:

I would suggest to go with the UI action for your scenario since it might cause a bad user experience where users are prompted directly to a problem record whenever state changes or have a confirmation message to open a new record. It would be great if you can explain feasibility of you use case.