UCA mounting bracket damage

Pulled the Duster in to swap the drivetrain and when I crawled underneath to start unbolting things I noticed that the front mounting brackets for the upper control arm are split where they meet the frame (both drivers and passenger side). Has anyone repaired this kind of damage? What causes this - curbshots? This car seemed to "wander" driving down the freeway, could this have been the cause? I guess I will be rebuilding the front end while swapping the engine. Thanks,
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