If you specify the name and linkField options of Browse properly I think load_num will populate automatically on the browse lines for you.
The BrowseControl ‘name’ option should be the field name you want from the Access record. This is load_num in your case.
The BrowseControl ‘linkField’ option should be the field in the Browse query that corresponds with the field you specified as the name option. In your case I think this is load_num for the Browse query as well. You have specified load_num_new which is incorrect based on the columns you are displaying in the Browse.