Index: trunk/src/org/openstreetmap/josm/data/imagery/OffsetBookmark.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/imagery/OffsetBookmark.java	(revision 5223)
+++ trunk/src/org/openstreetmap/josm/data/imagery/OffsetBookmark.java	(revision 5224)
@@ -13,8 +13,4 @@
 import org.openstreetmap.josm.Main;
 import org.openstreetmap.josm.data.coor.LatLon;
-import org.openstreetmap.josm.data.projection.Mercator;
-import org.openstreetmap.josm.data.projection.Projection;
-import org.openstreetmap.josm.data.projection.ProjectionInfo;
-import org.openstreetmap.josm.data.projection.Projections;
 import org.openstreetmap.josm.gui.layer.ImageryLayer;
 
@@ -22,5 +18,5 @@
     public static final List<OffsetBookmark> allBookmarks = new ArrayList<OffsetBookmark>();
 
-    public Projection proj;
+    public String projectionCode;
     public String layerName;
     public String name;
@@ -29,15 +25,15 @@
 
     public boolean isUsable(ImageryLayer layer) {
-        if (proj == null) return false;
-        if (!Main.getProjection().toCode().equals(proj.toCode())) return false;
+        if (projectionCode == null) return false;
+        if (!Main.getProjection().toCode().equals(projectionCode)) return false;
         return layer.getInfo().getName().equals(layerName);
     }
 
-    public OffsetBookmark(Projection proj, String layerName, String name, double dx, double dy) {
-        this(proj, layerName, name, dx, dy, 0, 0);
+    public OffsetBookmark(String projectionCode, String layerName, String name, double dx, double dy) {
+        this(projectionCode, layerName, name, dx, dy, 0, 0);
     }
 
-    public OffsetBookmark(Projection proj, String layerName, String name, double dx, double dy, double centerX, double centerY) {
-        this.proj = proj;
+    public OffsetBookmark(String projectionCode, String layerName, String name, double dx, double dy, double centerX, double centerY) {
+        this.projectionCode = projectionCode;
         this.layerName = layerName;
         this.name = name;
@@ -50,14 +46,5 @@
     public OffsetBookmark(Collection<String> list) {
         ArrayList<String> array = new ArrayList<String>(list);
-        String projectionStr = array.get(0);
-        proj = ProjectionInfo.getProjectionByCode(projectionStr);
-        if (proj == null) {
-            for (Projection proj : Projections.getProjections()) {
-                if (proj.getCacheDirectoryName().equals(projectionStr)) {
-                    this.proj = proj;
-                    break;
-                }
-            }
-        }
+        this.projectionCode = array.get(0);
         this.layerName = array.get(1);
         this.name = array.get(2);
@@ -68,11 +55,6 @@
             this.centerY = Double.valueOf(array.get(6));
         }
-        // Mercator scale factor migration
-        if (proj instanceof Mercator && Math.abs(this.dx) < 1E-3 && Math.abs(this.dy) < 1E-3) {
-            this.dx *= 6378137;
-            this.dy *= 6378137;
-        }
-        if (proj == null) {
-            System.err.println(tr("Projection ''{0}'' is not found, bookmark ''{1}'' is not usable", projectionStr, name));
+        if (projectionCode == null) {
+            System.err.println(tr("Projection ''{0}'' is not found, bookmark ''{1}'' is not usable", projectionCode, name));
         }
     }
@@ -80,6 +62,6 @@
     public ArrayList<String> getInfoArray() {
         ArrayList<String> res = new ArrayList<String>(7);
-        if (proj != null) {
-            res.add(proj.toCode());
+        if (projectionCode != null) {
+            res.add(projectionCode);
         } else {
             res.add("");
@@ -127,5 +109,5 @@
         }
         OffsetBookmark nb = new OffsetBookmark(
-                Main.getProjection(), layer.getInfo().getName(),
+                Main.getProjection().toCode(), layer.getInfo().getName(),
                 name, layer.getDx(), layer.getDy(), center.lon(), center.lat());
         for (ListIterator<OffsetBookmark> it = allBookmarks.listIterator();it.hasNext();) {
Index: trunk/src/org/openstreetmap/josm/gui/preferences/imagery/ImageryPreference.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/preferences/imagery/ImageryPreference.java	(revision 5223)
+++ trunk/src/org/openstreetmap/josm/gui/preferences/imagery/ImageryPreference.java	(revision 5224)
@@ -930,5 +930,5 @@
                 @Override
                 public void actionPerformed(ActionEvent e) {
-                    OffsetBookmark b = new OffsetBookmark(Main.getProjection(),"","",0,0);
+                    OffsetBookmark b = new OffsetBookmark(Main.getProjection().toCode(),"","",0,0);
                     model.addRow(b);
                 }
@@ -988,6 +988,6 @@
                 switch (column) {
                 case 0:
-                    if (info.proj == null) return "";
-                    return info.proj.toString();
+                    if (info.projectionCode == null) return "";
+                    return info.projectionCode.toString();
                 case 1:
                     return info.layerName;