Does anyone know of a way to do a mass bin transfer, without having to adjust all stock out and back in again?

if you're using multi-locations, you can instead do inventory transfers. Although, like inv. adjustments, they're posting transactions

Thanks @David B. We're multi-location, but I've had issues in the past with stock valuation variances appearing when moving stock back and forth, so we've resigned ourselves to having to do several thousand lines of manual adjustment instead. It's crazy that Netsuite lacks an import profile for bin transfers.