We need to refinance an open-end HELOC into a closed-end variable rate note. I am thinking that we need to do all ARM TIL disclosures and RESPA, would this be correct?

You are correct. Don't forget Flood (although you may be able to rely on a previous SFHDF), RofR (if new money is advanced) and HMDA (if it is HI or refinance of purchase money, or if you choose to report all refinancings).

David, thank you for the reassurance.

What about the reverse, converting a closed end Home Equity Loan into an open ended HELOC?

HELOC disclosures, RofR, Flood, and HMDA (optional).