Verb (5-dan, む, transitive)
1. to bring in; to take in; to carry in
持ち込む前に許可を取ってるので文句はない。Since permission was obtained before bringing it in, there are no complaints.
2. to approach (someone) with (a proposal, offer, problem, etc.); to bring; to lodge (a complaint); to propose (e.g. a project)
なんでこんなときに、お前はそんな話を持ち込んでくるんだ。Why would you bring me something like that at a time like this?
3. to bring (to another stage); to take (e.g. to court, to extra time, to a play-off)