LOUISVILLE, Ky. — The next round in Kentucky’s legal fight over abortion features the same combatants, but they’ll be arguing over a different issue — a second-trimester procedure to end pregnancies. Lawyers for Kentucky’s only abortion clinic will argue in federal court next week that a new state law amounts to an unconstitutional ban on the “safest and most common method” of second-trimester abortions. Republican Gov. Matt Bevin’s administration sees the law as a proper restriction on “a particularly gruesome form of abortion.” Bevin signed the measure in April and it went into effect immediately. That spurred a legal challenge from the state’s only remaining abortion clinic, EMW Women’s Surgical Center in Louisville. Within days, a federal judge suspended its enforcement pending the outcome of a trial that begins Tuesday in Louisville.