fix update

mec-web/src/main/java/com/ym/mec/web/controller/ReplacementInstrumentActivityController.java

@@ -85,9 +85,10 @@ public class ReplacementInstrumentActivityController extends BaseController {
         if (oldReplacementInstrumentActivity.getInstrumentsId().equals(replacementInstrumentActivity.getInstrumentsId())) {
             return succeed();
         }
+        oldReplacementInstrumentActivity.setSubjectId(replacementInstrumentActivity.getSubjectId());
         oldReplacementInstrumentActivity.setInstrumentsId(replacementInstrumentActivity.getInstrumentsId());
         oldReplacementInstrumentActivity.setUpdateTime(new Date());
-        replacementInstrumentActivityService.update(replacementInstrumentActivity);
+        replacementInstrumentActivityService.update(oldReplacementInstrumentActivity);
         return succeed(replacementInstrumentActivity);
     }