Created attachment 53227 [details]
minimum word list to reproduce the problem

Version:           0.9.3 (using KDE 4.4.2) 
OS:                Linux



Reproducible: Always

Steps to Reproduce:
1. open attached file synonym-bug.kvtml
2. select german word "Kiste"
3. select german word "Schachtel"
4. click on "Schachtel and Kiste are synonyms" in the synonyms panel
5. save in to a new file via "save as..." 
6. on the command line check the <synonym> part : tail -n 24 *.kvtml

Actual Results:  
synonyms part in file is corrupt: first <pair> entry has only one <entry> child:
 <synonym>
    <pair>
      <entry id="1">
        <translation id="1"/>
      </entry>
    </pair>
    <pair>
      <entry id="0">
        <translation id="1"/>
      </entry>
      <entry id="2">
        <translation id="1"/>
      </entry>
    </pair>
    <pair>
      <entry id="1">
        <translation id="1"/>
      </entry>
      <entry id="2">
        <translation id="1"/>
      </entry>
    </pair>
  </synonym>


Expected Results:  
 <synonym>
    <pair>
      <entry id="0">
        <translation id="1"/>
      </entry>
      <entry id="1">
        <translation id="1"/>
      </entry>
    </pair>
    <pair>
      <entry id="0">
        <translation id="1"/>
      </entry>
      <entry id="2">
        <translation id="1"/>
      </entry>
    </pair>
    <pair>
      <entry id="1">
        <translation id="1"/>
      </entry>
      <entry id="2">
        <translation id="1"/>
      </entry>
    </pair>
  </synonym>


Theres no way to save immediatly after adding synonym associations, therfor "save as" must be used to distinguish this bug from interfearece with other editig operations.