product id changed in downloads

Downloads from codecanyon, themeforest, etc. were always in the form:

themeforest-product_code-product_name.zip

Now the product code portion is a random jumble of characters. I append version number to the file name and this makes it impossible to keep downloads in version order as the file name varies due to random product code.

Envato is obviously purposely obfuscating the product code? Why? And how to get them to stop doing that?