diff --git a/addons/mrp/mrp_demo.xml b/addons/mrp/mrp_demo.xml
index 4aaeb50edf4..511e477739a 100644
--- a/addons/mrp/mrp_demo.xml
+++ b/addons/mrp/mrp_demo.xml
@@ -128,124 +128,124 @@
 
     <!-- Resource: mrp.property.group -->
 
-        <record id="mrp_property_group_ram" model="mrp.property.group">
+        <record id="mrp_property_group_1" model="mrp.property.group">
             <field name="name">RAM</field>
         </record>
 
-        <record id="mrp_property_group_hdd" model="mrp.property.group">
+        <record id="mrp_property_group_2" model="mrp.property.group">
             <field name="name">HDD</field>
         </record>
 
-        <record id="mrp_property_group_cpu" model="mrp.property.group">
+        <record id="mrp_property_group_3" model="mrp.property.group">
             <field name="name">CPU</field>
         </record>
 
-        <record id="mrp_property_group_cdrw" model="mrp.property.group">
+        <record id="mrp_property_group_4" model="mrp.property.group">
             <field name="name">CDRW</field>
         </record>
 
-        <record id="mrp_property_group_cdrom" model="mrp.property.group">
+        <record id="mrp_property_group_5" model="mrp.property.group">
             <field name="name">CPROM</field>
         </record>
 
-        <record id="mrp_property_group_dvdrom" model="mrp.property.group">
+        <record id="mrp_property_group_6" model="mrp.property.group">
             <field name="name">DVDROM</field>
         </record>
 
-        <record id="mrp_property_group_dvdrw" model="mrp.property.group">
+        <record id="mrp_property_group_7" model="mrp.property.group">
             <field name="name">DVDRW</field>
         </record>
 
-        <record id="mrp_property_group_case" model="mrp.property.group">
+        <record id="mrp_property_group_8" model="mrp.property.group">
             <field name="name">case</field>
         </record>
 
-        <record id="mrp_property_group_cooler" model="mrp.property.group">
+        <record id="mrp_property_group_9" model="mrp.property.group">
             <field name="name">cooler</field>
         </record>
 
-        <record id="mrp_property_group_mb" model="mrp.property.group">
+        <record id="mrp_property_group_10" model="mrp.property.group">
             <field name="name">MB</field>
         </record>
 
-        <record id="mrp_property_group_psu" model="mrp.property.group">
+        <record id="mrp_property_group_11" model="mrp.property.group">
             <field name="name">PSU</field>
         </record>
 
         <!-- Resource: mrp.property -->
 
         <record id="mrp_property_0" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_ram"/>
+            <field name="group_id" ref="mrp_property_group_1"/>
             <field name="name">DDR 512MB PC400</field>
         </record>
 
         <record id="mrp_property_1" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_ram"/>
+            <field name="group_id" ref="mrp_property_group_1"/>
             <field name="name">DDR 256MB PC400</field>
         </record>
 
         <record id="mrp_property_2" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_hdd"/>
+            <field name="group_id" ref="mrp_property_group_2"/>
             <field name="name">HDD Seagate 7200.8 120GB</field>
         </record>
 
         <record id="mrp_property_3" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_hdd"/>
+            <field name="group_id" ref="mrp_property_group_2"/>
             <field name="name">HDD Seagate 7200.8 80GB</field>
         </record>
 
         <record id="mrp_property_4" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_cpu"/>
+            <field name="group_id" ref="mrp_property_group_3"/>
             <field name="name">CPU AMD Athlon XP 1800+</field>
         </record>
 
         <record id="mrp_property_6" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_cpu"/>
+            <field name="group_id" ref="mrp_property_group_3"/>
             <field name="name">CPU Intel CeleronD 2.53Ghz</field>
         </record>
 
         <record id="mrp_property_7" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_cdrw"/>
+            <field name="group_id" ref="mrp_property_group_4"/>
             <field name="name">CD Burner Plextor PX-4824</field>
         </record>
 
         <record id="mrp_property_8" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_cdrom"/>
+            <field name="group_id" ref="mrp_property_group_5"/>
             <field name="name">CD Reader Samsung cd-520</field>
         </record>
 
         <record id="mrp_property_9" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_dvdrom"/>
+            <field name="group_id" ref="mrp_property_group_6"/>
             <field name="name">DVD Reader LG dvd-r16</field>
         </record>
 
         <record id="mrp_property_10" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_dvdrw"/>
+            <field name="group_id" ref="mrp_property_group_7"/>
             <field name="name">DVD Burner Nec ND-3550</field>
         </record>
 
         <record id="mrp_property_11" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_case"/>
+            <field name="group_id" ref="mrp_property_group_8"/>
             <field name="name">Case Antec Sonata 2</field>
         </record>
 
         <record id="mrp_property_12" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_cooler"/>
+            <field name="group_id" ref="mrp_property_group_9"/>
             <field name="name">Cooler ThermalTake big Typhoon</field>
         </record>
 
         <record id="mrp_property_13" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_mb"/>
+            <field name="group_id" ref="mrp_property_group_10"/>
             <field name="name">MB Abit NF7-s</field>
         </record>
 
         <record id="mrp_property_14" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_mb"/>
+            <field name="group_id" ref="mrp_property_group_10"/>
             <field name="name">MB DFI NF8 Ultra-D</field>
         </record>
 
         <record id="mrp_property_15" model="mrp.property">
-            <field name="group_id" ref="mrp_property_group_psu"/>
+            <field name="group_id" ref="mrp_property_group_11"/>
             <field name="name">PSU LC Power LC6550</field>
         </record>