How to refund to "Owed to Owner" account?

Ok this is a little hard to follow but bear with me.

I purchased something on my personal credit card for my business (supplies for a specific client), and I recorded it as an Expense: Cost of Goods Sold, paid through the Liability account: "Owed to Owner". (I pay this off once a month).

I later returned some of these supplies, but now I can't figure out how to record the return. It should be a refund against the Expense, debiting the Owed to Owner liability account. I think.

I tried to use various ways to record this, but I guess it just needs to be a manual journal entry?

Thanks,

Eric