phase_area Workflow optimization

[mdX7]

Is your feature request related to a problem? Please describe.
When implementing new phases the typical workflow would be to assign area/zoneids to phaseids, not vice versa. What do i mean with this:
When picking phase_area option in WDE you are supposed to enter area initially and afterwards have the list of all phases in that area. Phases mostly have 1-5 areas to be assigned to and i don't care about the other phases in these areas while implementing a new phase.

Describe the solution you'd like
Initially select phaseid and then get a list of the areas where the phase is already active. So pretty much just swapping phaseid and areaid selection: