Kevin, Here are the answers to your two questions. I hope I am giving you all the info you wanted.

1) How exactly do you have this relationship set up?

The relationship is set up as follows:
In Page2 of the form, there are two views involved:
lv_AllFlds (from the imc_AllF table) for the lstFullList list of KMoverObj
lv_SelFlds (from the imd_SelF table) for the lstSelected list of KMoverObj

In the lv_SelFlds view, the Join is:
Inner Join => imc_AllF.iId = imd_SelF.iFldId


2) How does the KMoverObj Selected view populate the cGrid view?

The form has three pages. In the UIEnable() Method of Page3, I have the following code:

LPARAMETERS lEnable
DoDefault()
If lEnable
This.LoadCursor()
Requery( 'v_SelWidth' )
Go Top In v_SelWidth
Else
TableUpdate( 1, .T., 'v_SelWidth' )
EndIf

the LoadCursor() Method on Page3, updates the lv_SelWidth view also on Page3 from
the lstSelected array on Page2 & from the lv_SelFlds view also on Page2 as follows:

1) If the aSelList array of Page2 is empty, then empty the v_SelFlds view & return
2) Disable the "Automatic Update" by copying the "Selected List" array to the
"Backup Selected List" array.
3) Delete records in v_SelFlds for records deleted from the array
4) Perform a manual update by copying the lv_SelFlds view to the lv_SelWidth view
but keeping intact all fields already in the lv_SelWidth view.