Tides in nested domains?

When nesting domains in areas where tides are important, do tidal parameters are only needed in the parent FRC file?

The function nested_forcing.m does not interpolates these variables into the croco_frc.nc.1 file, for what I can see.

Indeed, it’s only needed on the parent file. Tidal forcing will be propagated on the coarser grid, and tranmitted at the boundary to the fine grid