The case where a row has no cells at all

Here the thing in detail:

 1. Copy some rows (yellow range) to the clipboard

2. Paste to the page (or to an empty text frame) and add a column to the new table

3. Merge the yellow cells columnwise.

4. Select the merged cells and copy

5. Select the first cell of the range in the old table

6. Paste the copied merged cells:

7. Run a script to get the actual names of each cell of the table as contents:Result:

Bottom line of this exercise:

If you get customer's documents and running scripts on tables it could well be that some rows of a table contain no cells at all.