modpath7 issues with flopy.utils.modpathfile

[dryter-usgs]

I'm using flopy 3.3.1
The model is MF6, and ModPath 7. The model is too big to upload but I uploaded the ModPath files.
mpath.zip

Problems with:
get_destination_pathline_data
and get_destination_endpoint_data
and get_destination_timeseries_data

There are two things happening.
I cannot select destination cells using [(k, i, j)], I have to use node number. if I try it with this code
p = flopy.utils.PathlineFile(fpth)
pw7 = p.get_destination_pathline_data(dest_cells=[(0, 31, 43)])
I get the error: "ValueError: could not assign tuple of length 3 to structure with 1 fields."

When I use node number, only the paths entering the cell from the left side are selected (see attachment). And sometimes the paths selected aren't even entering the cell. I don't remember having this problem in 3.3.0

I attached the script and two figures I saved, one with only pathlines that end up in the well 32H1S, and another will all lines. I hope it isn't my code. I've gone over it and over it and can't figure out why it doesn't work.

mpath_forward.zip

[langevin-usgs]

It is true that for mp7, the get_destination_pathline_data() method requires a grid node number, and not layer, row, column, so the docstring should be updated. The notebook linked below shows that these methods are working fine for the MODFLOW 6/MODPATH 7 combination for a multilayer structured grid model. If you can reproduce your problem with a small example we'd be happy to have a look.

https://github.com/modflowpy/flopy/blob/develop/examples/Notebooks/flopy3_modpath7_structured_example.ipynb

[jdhughes-usgs]

@langevin-usgs is this resolved?