Josh,
I completely agree with Matt's comments, regardless of lift out, hinged out left or right or hinged on end lift up the opposite end, precision in wood framework and track alinement of track on removeable section, hinged lift up section, or hinged out section with the stationary on both sides of these movable sections is critical.
Horizontal stops for pivoting gate and vertical support of the opposite end of hinged upward lift gate is also a requirement for track alignment, Matt's comments on electricial connections to the track or tracks mounted on these removable or pivoted sections is critical based on method chosen, removeable or pivoted up or sideways. For a removeable section a male female electrical connection pair is required for complete seperation, for the hinged sections flexible wires, 16 or 18 gauge, will have to be soldered to the track, routed under the track mounting board on the hinged end to the stationary track framework wiring to complete the track circuit.
I used nailable wire supports in securing the wire to the bottom of the upward pivoting track board and allowed enough wire slack from the closed to open gate position for all wire to fold back on itself, on this length was verified the wire was attached with the nailable wire support and the free wire length routed to the stationary framework wires.