EE Keeper spell change for Sorcerer

Hi everyone, Not a modding question maybe but I have a sorcerer in my group who recently went to level 5. I made a mistake when I selected the additional first level spell I was given - I was looking at Chromatic Orb, but somehow selected Identify (which was my second choice).

So, I figured, "No prob," and went to EE Keeper to correct my error after I discovered it sometime later (none of my saves would help).

Anyway, when I did, I can delete Identify and add but if I try to add in memorizations in CO, it tells me I already know the max number of spells for that level. Nothing I do seems to get me past that error.

I can live with Identify, but it wasn't my choice as I wanted another attack spell. Does anyone know of anything I can do to work around the error? Thanks CT