idea springboot multi-module project to migrate the contents of a module to another module, then remove the module, project start error

After operation:
1. a module and another module cyclic dependency, then the two modules integrated into one module
2. Delete the original module
3. Start given scan to com.item.a.bean, com.item.b .bean

solution:
because used maven install too, although the module is removed, but there are still jar package
jar package removed before finding module, and then removed off, restart, modify incorrect references, OK