delete the merged file and modify the project file

isample_mod/isample.qproj

@@ -8,8 +8,8 @@
       <Location name="mod_isample"/>
     </Folder>
     <Folder name="locations">
-      <Location name="mod_isample_pavResidential"/>
-      <Location name="mod_isample_street"/>
+      <Location name="mod_isample_pav_residential"/>
+      <Location name="mod_isample_city_residential"/>
     </Folder>
   </Structure>
 </QGen-project>