WRONG CLRNC DELIVERED TO FLC. AFTER DEP ATC INTERVENED WITH VECTORS. POST FLT ATC FLC REVIEW.

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AT APPROX XA00 CST I RECEIVED AN IFR CLRNC FROM MIDWAY MDW CLRNC DELIVERY TO GO TO MILWAUKEE MKE. THE CLRNC WAS POORLY DELIVERED AND CONTAINED DISCREPANCIES. UPON QUERY; THE CLRNC WAS REREAD ONCE AND POSSIBLY TWICE WITH SOME CHANGES BEFORE I WAS SATISFIED THAT I HAD COPIED IT CORRECTLY. I DEPARTED MDW ABOUT 1 1/2 HRS LATER AND FLEW THE CLRNC AS COPIED. WHEN MDW TWR HANDED ME OFF TO CHICAGO RADAR; THE CTLR IMMEDIATELY NOTED THAT MY FLT PATH WAS NOT THE ONE HE WAS EXPECTING. HE IMMEDIATELY CHANGED MY FLT PATH TO AVOID A DEVELOPING CONFLICT AND VECTORED ME ONTO A NEW RTE TO MY DEST. I WAS ASKED TO CALL CHICAGO RADAR ON THE PHONE AFTER LNDG JUST BEFORE MY ARR AT MKE. I CALLED AND TALKED TO A SUPVR AT THE FACILITY. I WAS TOLD THAT THE INCIDENT WAS TO BE INVESTIGATED IMMEDIATELY AND ASKED FOR A PHONE NUMBER WHERE I COULD BE REACHED IN ABOUT 2 HRS. I GAVE A NUMBER AND WAS CALLED BACK IN ABOUT 2 HRS. I WAS INFORMED THAT THE INVESTIGATION SHOWED THAT THE INCIDENT WAS DEEMED TO BE A SYS DEV AND THAT I WOULD NOT BE INVOLVED ANY FURTHER. I ACCEPTED THAT AND CONTINUED WITH MY MISSION.