The cards are exactly the same in terms of indicated solubility criteria. See below. As a result, I suggested that they need to be consolidated or else you are essentially guessing whether or not the cloze refers to OH- or O2-.
{{c2::O2-}} is {{c1::insoluble}} except with {{c3::Na+}}, {{c3::K+}}, {{c3::NH4+}}, {{c3::Ca2+}}, {{c3::Sr2+}}, and {{c3::Ba2+}}.
{{c2::OH-}} is {{c1::insoluble}} except with {{c3::Na+}}, {{c3::K+}}, {{c3::NH4+}}, {{c3::Ca2+}}, {{c3::Sr2+}}, and {{c3::Ba2+}}.
Digging into this further I see that it’s been a point of conversation in the past.
Part of the issue seems to be Ca as a bugaboo here, in that it confers some degree of solubility and, thus, some sources include it and others leave it out as an exception to the rule (this has led to some consternation and debate with discrepant sources being cited). In turn, this seems to have created various iterations of both notes over time as people tried to best capture the details here, in which they’ve ended up converging on each other. Took me a bit of digging to get to the background on how, exactly, these cards converged so.
Part of this can be seen in the media contained in the ‘additional resources’ field which does not list them as having the same exceptions. But, just for due diligence, I double-checked both Kaplan and UWorld and they both line up on this as well, which makes life a bit easier.
I went ahead and corrected one note (and removed the discrepant image from additional resources) and I’ll see what I can do about suspending (or deleting) the other one so as to avoid redundancy down the line. 
Sounds good. Thanks!