Fix issue of UPS Fees added to all products in cart?

Hi, We use this plugin for UPS shipping in our cart:

https://www.ads-software.com/plugins/flexible-shipping-ups/

We have this problem:

https://www.ads-software.com/support/topic/ups-fees-are-charged-for-all-products-in-cart-not-just-products-that-have-ups/

Their plugin adds UPS fees to EVERY ITEM in the cart, even if 5 out of 6 items in the cart already have free shipping included.

Will this plugin fix the flaw that their plugin has in it? When a customer adds a product to the cart with free shipping, the shipping is free. If they add a second item with UPS fees required, that plugin COMBINES both items and charges shipping on BOTH.

We used your Shipping Packages plugin in hopes that it would fix it, but that didn’t work. Will this one?