going forward (e.g. for 2019), if the only contributions are deferrals and safe harbors then
if the card isn't good enough, then the Code
416(g)(4)(H) can be used
(H) Cash or deferred arrangements using alternative methods of meeting nondiscrimination requirementsThe term “top-heavy plan” shall not include a plan which consists solely of—
(i)
a cash or deferred arrangement which meets the requirements of section 401(k)(12) or 401(k)(13), and
(ii)
matching contributions with respect to which the requirements of section 401(m)(11) or 401(m)(12) are met.