Davis Bacon question - ADP testing

[AKconsult]

If an employer wants to make prevailing wage dollars available for hardship, does that mean those dollars do not go in the ADP test at all? Are they only included in the ADP if they are treated as QNEC? If I don't put them in the ADP, are there really any other testing consequences in a plan where only NHCEs are receiving prevailing wage contributions?

Thanks!