Comp for Testing when plan has 3 different entry dates

[dmb]

401k plan has different entry dates for salary deferrals, matching and new comparability employer base allocation. Salary deferral is most liberal down to least liberal for employer base allocation. Compensation is defined as "date of entry" comp for all three sources. Our software (ASC) doesn't only seems to allow one definition of compensation for ABPT purposes. Would it comply with the X-testing rules to add the ebars of each source together to determine the ebar for the ABPT or should the ABPT use only one definition of comp to calculate a total ebar? And if so, would it be based on the most liberal (since the salary deferral is the first entry date) or other? Any input is appreciated. Thanks.