It's a new situation for Ontario and unused tuition credits in general. In some other provinces, your provincial amount reverts to your federal amount but in Ontario's case, you can't even claim that. Since you haven't claimed any of those unused provincial amount in any other province, it's going to come down to how Alberta treats these amounts once you move back. I've contacted the Finance Dept in Alberta and will update you if/when they reply. In the meantime, keep an eye out for your NOA. Your unused provincial amounts should be listed as carry-forward since you haven't used them at all in 2018.
