Calendar copy issue.

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## 7.9.4 (git master)
 * Ensure attribute names are valid when exporting JSON.
+* Improve handling of custom field lookup values (Based on a contribution by Nick Darlington).
+* Fix an issue when copying a calendar which has exceptions defined.
 
 ## 7.9.3 (10/09/2019)
 * Add support for reading task early finish and late finish attributes from Asta PP files.

src/changes/changes.xml

@@ -8,6 +8,7 @@
 		<release date="git master" version="7.9.4">
 			<action dev="joniles" type="update">Ensure attribute names are valid when exporting JSON.</action>
 			<action dev="joniles" type="update">Improve handling of custom field lookup values (Based on a contribution by Nick Darlington).</action>
+			<action dev="joniles" type="update">Fix an issue when copying a calendar which has exceptions defined.</action>
 		</release>
 		<release date="10/09/2019" version="7.9.3">
 			<action dev="joniles" type="add">Add support for reading task early finish and late finish attributes from Asta PP files.</action>

src/main/java/net/sf/mpxj/ProjectCalendar.java

@@ -1841,10 +1841,10 @@ public void copy(ProjectCalendar cal)
       System.arraycopy(cal.getDays(), 0, getDays(), 0, getDays().length);
       for (ProjectCalendarException ex : cal.m_exceptions)
       {
-         addCalendarException(ex.getFromDate(), ex.getToDate());
+         ProjectCalendarException copyException = addCalendarException(ex.getFromDate(), ex.getToDate());
          for (DateRange range : ex)
          {
-            ex.addRange(new DateRange(range.getStart(), range.getEnd()));
+            copyException.addRange(new DateRange(range.getStart(), range.getEnd()));
          }
       }