It's pretty early for Lacerte to contain all elements or even be stable. The IRS releases the schema, first, so I watch for resolution dates for known issues. That provides a bit of early warning for Lacerte updates or missing data fields.

https://www.irs.gov/e-file-providers/known-issues-and-solutions

The xlsx file for the forms of interest (by tax year) will include if specific details are even being resolved in a specific tax year or not.