My character is a Divine Soul Sorceress but I swapped her Divine Magic spell granted by her evil affinity (Inflict Wounds) for another Cleric spell when she leveled up previously as it says I'm able to (XGtE p40). I'm porting her over to D&D Beyond but I don't see a way to remove Inflict Wounds and choose another spell. Halp?

https://www.dndbeyond.com/profile/shadow1784/characters/7129596

Just did more Googling and found that this is a known bug without a fix thus far.

Is it possible to add an additional spell somehow and simpley ignore Inflict Wounds for the time being?

You can add spells with a homebrewed feat and simply unselect inflict wounds from the character sheet. 

1) Sorcerers don't have prepared spells to unselect (unless i understand this wrong) but it can just be disregarded easily enough.

2) I've created a custom feat which I believe will do the job. How do I grant my character an additional feat?

in the Features and Traits section, look for a “manage feat” link at the bottom of that section: click on that, and you can add feats outside of the usual level progression.

Quote from shadow1784 >>

2) I've created a custom feat which I believe will do the job. How do I grant my character an additional feat?

 From the character sheet go to "Feats" under Features & Traits. Then select "Manage Feats". It will open a sidebar where you can select a feat.

Quote from shadow1784 >>

1) Sorcerers don't have prepared spells to unselect (unless i understand this wrong) but it can just be disregarded easily enough.

 In the character builder - class - class features - divine magic - leave it as "choose option"

I asked #2 after a lot of digging and, as is usually the case, I found it within minutes of posting. However, the feat I created isn't working correctly so I'll have to keep playing with it.

Thanks for the help, everyone.