"is not a Tax Preparer tool"

"to connect to the Lacerte data"

I know this. I've used it for years. The point is, there are updates from the IRS (via Congress) that add or remove fields. I recommend watching the IRS Known Issues, as you can see what's pending, errors, not going to be resolved in the current tax year, etc. It also gives you a heads up for anything new as retroactive (thanks to Congress). IRS originates the XML requirements.