make dolphin detect 2 similar roms as different games

[negativeions369]

I have SM sunshine and SM sunburn, but Dolphin thinks they are both sunshine. I can't rename the sunburn rom to sunburn no matter what I do. I thought just clicking twice slowly on the name would let you rename but no. Anyways, save data is shared between the two. How do I force Dolphin to make them separate? Not to share save data and be able to change the name. Thanks.