OK, your attorney wasn't exactly looking out for your interests when the wording of the child support order was put together. As it stands, you will continue to owe the $2,700 a month in child support, regardless of how many of the minors are emancipated.
However, you might consider filing a petition to modify support--if your support for the remaining 2 children will be lowered.
Using a best case scenario approach, if we know that you earn roughly 150K a year gross, and if the court will impute the income earning capacity of your ex at, say 30-40K a year, under Wisconsin guidelines, you would be expected to pay approximately $3,000 just for the 2 children who are not yet emancipated.
The real problem you have is that the amount you pay for support is based more on your income and the number of nights your children spend with you. If you can show that the two 15 year olds spend at least 1/3 of the year sleeping in your home, you potentially could have support lowered to about $2,250.00 a month.
As a result you may want to reconsider seeking any kind of a modification at this point in time.
I wish you the best.
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