The slicers

preslice reads five slicers and shows each setting under that slicer's own name.

Which slicers?

Slicer Settings file
PrusaSlicer Metadata/Slic3r_PE.config
Bambu Studio Metadata/project_settings.config
OrcaSlicer Metadata/project_settings.config
Cura inside the model XML
Creality Print Metadata/project_settings.config

What survives a move between slicers?

From, to Geometry and placement Settings
Between Bambu Studio, OrcaSlicer, Creality Print yes mostly
Any other pair yes no

Use Convert to carry the settings.

What about other tools?

A .3mf from CAD or another tool opens for its geometry, with no settings: preslice reads the geometry the 3MF Core Specification defines, which every conforming writer produces.