I recently extended my CD/Bond ladder out a few years to take advantage of current high yields. I tend to think of all the "rungs" in the ladder as being the same whether they're bonds or CDs. I buy whatever looks good at the time that has the maturity I seek.
My recent purchases were all FDIC-insured CDs because they are actually paying more right now than corporate bonds of similar maturities.
Looking at my asset allocation, it looks too high in "Cash" because of the CDs. I do have plenty of liquid cash in money market funds and bank deposits. It occurred to me today that I could assign the Asset Class "Domestic Bonds" to my CDs while retaining their "Type" as CD. This makes my allocation look more like what I want it to be even though it's technically wrong. It's my data and I can do what I like with it, but is there any technical reason not to do this?