Hii,,
If you read the level of your ECA report, it is superior to ICAP package. When they evaluate it for immigration purpose, they evaluate your credentials at highest possible level , therefore, it can't be upgraded further. In this case you have to start a new application within same account, best way is to click upgrade report and then choose change the evaluation from document by document to course by course. This will take you to an option of start new application, click and fill the new application form as you did for ECA, unless you want to add additional / new qualification compared to your ECA application. While completing the application, it will ask your previous Wes report number which should be filled in by default if you started application from same account. Once you created application and paid for it, you will get a new Wes number with a message waiting for the documents. Now, you go to contact us and from the drop down menu in the subject select 'Transfer Documents' and in the text area provide your reference number and request them to transfer the documents. That's it!!
Just wait for couple of days your documents will be transferred to your new Wes account number, no need to send the documents again (If you are asking for the same credentials and not adding new one, otherwise your old documents will be transferred but you have to arrange documents for additional credential)
Regarding your old WES report, that will remain untouched with the same Wes number and with same details; if you want you can download it again. So don't worry..
I have done the above process and got my new WES report within 7 days and I am able to see both reports. I hope this helps you and others pursuing ECA to WES report..
Regards...