Length of dependent variable array larger than number of active cells

[p-ortega]

Hi all,

Proly a basic question...

I'm running a model through the API.
When retrieving the dependent variable X and checking its length, I'm finding it is larger than the active cells, as defined in the idomain.

Then, when reading the iactive array with:

iactive = mf6.get_value_ptr(mf6.get_var_address("IACTIVE", 'SLN_1'))

this array has ones that match the idomain array and zeros that correspond to the "extra" cells in X.

I reckon my questions are:
Where could these "extra cells" be coming from?
Is it ''safe'' to filter the X array with the iactive array?

Any insights will be appreciated.

Thank you!!
P