Upgrade 4.11.5 - 4.12.1 Fails With Products Can't Be Converted

I tried to upgrade my store and it gives me an error that it can't convert a group of my products so i can do the upgrade. Says to fix them. HOW?

I tried going in and creating a feature that the products use, then trying to add variations but I can't use existing variations and if I create new products then all the customization I've done for different ordering options on the embroidery product aren't there.

Do I have to manually recreate all these products? Why is it that they've been working just fine for years and now all the sudden you change the software and your conversion tool doesn't work on these.

Here's just someone of them in my store at: https://store.dryheatembroidery.com

Couldn't convert product "TnTraveler Dickies Style Short Sleeve Shirt"

Couldn't convert product "Goldwing Dickies Style Custom Logo Workshirt"

Couldn't convert product "Goldwing Dickies Style Muscle Bike Shirt"

Couldn't convert product "Goldwing MuscleBike Hanes Beefy Tee Shirt"

Couldn't convert product "ST1300 Dickies Style workshirt"

Couldn't convert product "Goldwing Dickies Style workshirt with Embroidered Goldwing"

Couldn't convert product "GL1800 Trike Embroidered Hanes Beefy Tee Shirt"

Couldn't convert product "Goldwing GL1800 Embroidered Hanes Beefy T-Shirt"

Does anyone know how fo modify the product settings so it will be converted?

Your time and assistance is very much appreciated.

Matt Caswell

UPDATE: I had turned off Option Combinations. I had to turn it back on and then using the list of failed conversion products I went into each one and deleted the empty option combination. I was finally able to update my store.

Why wasn't this FIX in the FAQ's for this conversion?