Tax implications for moving IRA money with pre-tax and post-tax contribution

[NJ_Devils]

I wanted to get rid of my commingled funds. Since my 401k only accepts pre-tax rollover, I can just take the part that is pre-tax (deductible taken in annual taxes) and any earnings in the Trad IRA and move them to the 401k.

I will be left with the non-deductible basis behind for a ROTH conversion. I wont have any IRA balance at the end of the year. Does that strategy make sense? @dmertz 

[dmertz]

Yes, that's how you separate out the pre-tax from the after-tax so that your are able to convert just the after-tax funds to Roth.