My old WFCO had a pass through.
I think that means when there is shore power the shore power could pass through to the dedicated inverter receptacles.
If you already installed a new inverter and it works I would remove the old WFCO and terminate both lines.
I would label the terminated lines for the next guy.
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Randy and Beth 15 F250, 16 30' International, ProPride, Dexter 3" lift, Michelin 16, Dill TPMS, Centramatics, Battleborn x4, Victron BMV and 1.2KW inverter, Orion DC/DC, BlueSolar MPPT, 300W solar, Alpine iLX, Polk MM1, Samsung smart 42"
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