SP coed rule?? ASA

[oppool]

Did a tournament this weekend using ASA rules modified
co-ed where a could play 7 men and 3 women with the ruling the women must bat in the top half of the line-up using the normal m/f rotation. Problem occured when team A turn in a line up where in the 5th and 6th spots they had persons of the male gender batting. Team B waited till after the 6th batter batted then appealed the improper line-up wanting a BOO ruling invoked. Did not believed that we could invoked a BOO because team A did follow the line-up they actually turn in though it was improper.

Question: Should we have invoked the BOO as team B appealed
or is this just considered improper line-up and should be changed before the next time through the line-up without penalty?

Thanks

Don