Eliminate Displayed Image Subtitle in Related Products

[Rayjak]

Migration to VM2 places image file name in the "Displayed Image Subtitle" of the Product Images which gets displayed as a subtitle for related products.  I would either like to eliminate the subtitle from the related products image without having to go into each product. Either 1) disable the code or 2) using phpAdmin, go through the table and eliminate it but I cant find the right table.

[attachment cleanup by admin]