Last year the taxes held out of the inherited IRAs split and showed up on the K1s this year it showed as a refund on the tax return. what did I do wrong?

Tax withholding ended up in box 13 of last year's Schedules K-1 because the preparer explicitly put it there.  However, that was improper because ordinary tax withholding is not permitted to be passed through on a Schedule K-1.  The fix is for the estate or trust to issue corrected 2017 Schedules K-1.