Bug when removing sale price – broken shop

Hi, I have a site with approx. 1000 products, and all of them set to sale price. Today I am ending this offer. If I choose “delete” sale price and regular price left empty, the plugin will make product unsaleable! Any price tag from product page is gone, and there is no “add to basket” option.

It’s because plugin sets “_sale_price” and “_price” postmeta value to empty value, but that’s wrong! It should empty “_sale_price” value and copy “_regular_price” value to “_price”. When “_price” is empty, the product is not allowed to purchasing.

It repairs when manually saving product, but that is unusable for 1000 products …