Reply To: vertical strokes in table

True
If you need to add a Header or Footer row you can apply your Table Style then select the whole table and in the Cell Styles pallet right click [None}
and select ‘Apply [None} Clear Overrides
That should do it.

If you have lots of tables all with Basic Table format you can either edit that or just select BASED ON and use the new table format you have created. All the tables will then update to the new format.

Follow good procedures, plan before you setup a new document and the formatting will be easy and consistent.

A script can be good if you have more complex requirements for correct/update an existing document.