We have an inactive AR account that has "Revalue Open Balance for Foreign Currency Transactions" checked. This cannot be unchecked and from researching this is the expected behavior for AR and AP accounts. Whenever currency evaluations are run this account gets a balance. Our accountants had cleared out the balance. Is there a way to not have this account to have Revalue Open Balance for this account to be active. We are unsure what transactions are actually causing this.

Run the DETAILED aging report for that specific AR account and check whether there are any open foreign currency denominated transactions

Our accountants had cleared out the balance

They likely did it wrong. What you're describing is a common problem that occurs if they do it wrong. Did they clear out the foreign balance(s) from that account too or just the USD balance? By that I mean if it's say a CAD account that converts to USD, the system retains a CAD balance and a USD balance. A common mistake made when clearing an account is that the entry gets done in USD because that's the only balance that is easily visible. That "strands" the CAD balance in the account and so the system sees that and keeps trying to revalue it.

When running the Detailed aging report for that specific account, I get not results.

you need to run a saved search displaying all transactions, amount, amount FX and currency. You will see all amounts in both currencies - transactional currency and the currency of the subsidiary. those “Our accountants had cleared out the balance” journal entries need to be reversed and recorded in proper currency. then it will be true 0.00