Interaction of using a restart file with `fix_final=True` on states.

[robfalck]

Issue Type

• [x] Bug
• [ ] Enhancement
• [ ] Docs
• [ ] Miscellaneous

Description

When using a restart file, the initial guess of the state history is loaded from the given case. If any of the states are set to fix_final=True, the desired final state will be overridden during the restart file load.

For now, we should raise an error the user uses restart with fix_final=True on any state or control in the phase. The error should instruct the user to use add_boundary_constraint on the state or control instead of a fix_final=True.

Example

TBD

Environment

dymos 1.5.1-dev