Bambu Lab A1 in PrusaSlicer

PrusaSlicer has no Bambu Lab A1 profile, and preslice cannot make one.

Does PrusaSlicer ship the A1?

No. PrusaSlicer's bundles hold no Bambu Lab printer. Bambu Studio, OrcaSlicer and Creality Print each ship an A1 profile: 256 × 256 × 256 mm bed, 0.4 mm stainless steel nozzle.

Why not convert to PrusaSlicer anyway?

Convert needs a stand-in printer, and a stand-in does not help. A1 files land on a Prusa CORE One L MMU3 with a 300 × 300 mm bed, and the G-code targets that printer, not your A1. Do not print it.

What should I use instead?

Open the file in OrcaSlicer, which keeps PrusaSlicer's layout: Bambu Studio to OrcaSlicer. Starting from a PrusaSlicer file, use PrusaSlicer to Bambu Studio. See what Convert cannot carry.