Sublist/child record does not update/refresh in edit mode

If the form I am on is in edit mode, and I add items to the sublist (A child custom record) via my suitescript I can not get the list that is visible to the customer to refresh/update.

I have attempted to use the following command, but then found that it only works on a static / read only list.

// Refresh the package contents list
nlapiRefreshLineItems('recmachcustrecord_myCustomRecord');

Is there a way to force a sublist/child record to update its view when the parent transaction form is in edit mode?

On my form I have clicked my "Do Something" button which is to create child records.  After the records are created the transaction form does not update the sublist.  When I exit edit mode the form then realizes the new lines and displays them.