--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/BedDiffCalculation.java	Mon Mar 30 19:27:11 2015 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/BedDiffCalculation.java	Mon Mar 30 19:28:41 2015 +0200
@@ -37,23 +37,12 @@
 
         this.river     = access.getRiverName();
         this.heightIds = access.extractHeightIds(context);
-        double from    = access.getFrom();
-        double to      = access.getTo();
-        double start;
-        double end;
-
-        if ((!Double.isNaN(from) && !Double.isNaN(to)) && from > to) {
-            log.debug("Reordering range.");
-            start = to;
-            end = from;
-        } else {
-            start = from;
-            end = to;
-        }
+        double from    = access.getFrom(true);
+        double to      = access.getTo(true);
 
         BedDiffYearResult [] results = new BedDiffYearResult[heightIds.length];
         for (int i = 0; i < heightIds.length; i++) {
-            BedHeightData [] pair = getHeightPair(heightIds[i], start, end);
+            BedHeightData [] pair = getHeightPair(heightIds[i], from, to);
             if (pair[0].getYear() == null || pair[1].getYear() == null) {
                 addProblem("beddiff.missing.year");
             }

--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/states/WDifferencesState.java	Mon Mar 30 19:27:11 2015 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/states/WDifferencesState.java	Mon Mar 30 19:28:41 2015 +0200
@@ -194,10 +194,8 @@
         WINFOArtifact winfo = (WINFOArtifact) artifact;
         String id = getID();
         RangeAccess rangeAccess = new RangeAccess(artifact);
-        double from = rangeAccess.getFrom();
-        double to = rangeAccess.getTo();
-        double start;
-        double end;
+        double from = rangeAccess.getFrom(true);
+        double to = rangeAccess.getTo(true);
         // Load the Artifacts/facets that we want to subtract and display.
         // Expected format is:
         // [42537f1e-3522-42ef-8968-635b03d8e9c6;longitudinal_section.w;0]#[1231f2-....]
@@ -207,15 +205,6 @@
 
         log.debug("Difference from: " + from + " to: " + to);
         /* Check if we need to obtain the data in a different order */
-        if ((!Double.isNaN(from) && !Double.isNaN(to)) && from > to) {
-            log.debug("Reordering range.");
-            start = to;
-            end = from;
-        } else {
-            start = from;
-            end = to;
-        }
-
         // Validate the Data-Strings.
         for (String s: datas) {
             if (!WaterlevelSelectState.isValueValid(s)) {
@@ -233,9 +222,9 @@
             // e.g.:
             // 42537f1e-3522-42ef-8968-635b03d8e9c6;longitudinal_section.w;1
             WKms minuendWKms = getWKms(StringUtil.unbracket(datas[i+0]),
-                context, start, end);
+                context, from, to);
             WKms subtrahendWKms = getWKms(StringUtil.unbracket(datas[i+1]),
-                context, start, end);
+                context, from, to);
 
             String facetName = "diff ()";
             String minName = "min";