test java/awt/datatransfer/DragUnicodeBetweenJVMTest/DragUnicodeBetweenJVMTest.html failed with latest jtreg version and passed with jtreg version 3

log:
----------System.out:(0/0)----------
----------System.err:(12/1197)*----------
C:\\local\\aurora\\CommonData\\j2se_java_gui\\test\\java\\awt\\datatransfer\\DragUnicodeBetweenJVMTest\\DragUnicodeBetweenJVMTest.java:51: error: package test.java.awt.regtesthelpers.process does not exist
import test.java.awt.regtesthelpers.process.ProcessCommunicator;
                                           ^
C:\\local\\aurora\\CommonData\\j2se_java_gui\\test\\java\\awt\\datatransfer\\DragUnicodeBetweenJVMTest\\DragUnicodeBetweenJVMTest.java:52: error: package test.java.awt.regtesthelpers.process does not exist
import test.java.awt.regtesthelpers.process.ProcessResults;
                                           ^
C:\\local\\aurora\\CommonData\\j2se_java_gui\\test\\java\\awt\\datatransfer\\DragUnicodeBetweenJVMTest\\DragUnicodeBetweenJVMTest.java:108: error: cannot access ProcessResults
    private static void verifyTestResults(ProcessResults processResults) {
                                          ^
  bad source file: C:\\local\\aurora\\CommonData\\j2se_java_gui\\test\\java\\awt\\regtesthelpers\\process\\ProcessResults.java
    file does not contain class ProcessResults
    Please remove or make sure it appears in the correct subdirectory of the sourcepath.
result: Failed. Compilation failed: Compilation failed