That is strange! But I'm glad you got it sorted out.
I'm far from an expert but the only differences for inherited IRAs - that I know about at least - are that the RMD requirements are calculated per individual 1099 (and not like regular IRAs where the calculations are made on the sums of all distributions and all RMDs from all 1099s), and the 5 and 10 year rules (which state that the account must be emptied within 5 or 10 years depending on the date of the death of the original account holder).
I can't imagine what must have triggered TTax to remove the tax it had previously calculated. Maybe a TTax employee will chip in with an explanation?
