I'm not 100% here but bumping this up for you and to ask, how old is/are the minor(s). If a minor is < 14 many requirements are waived.
For concurrent applications
Original documents for the minor are verified when the principal applicant attends their program integrity interview. If the minor is 14 years of age or older at time of grant, their identity will be verified at ceremony check-in.
For non-concurrent applications
If a minor is 14 years of age or older at time of grant, their identity will be verified at ceremony check-in.
If a minor is under 14 years of age at time of grant, their citizenship certificate is generally mailed directly to the principal applicant.
I'd guess the focus is on the last 5 years (as of application time, ie: eligibility period) of travel, it that involves multiple passports so be it.