I know you posted this awhile ago so hopefully WGT has restored your CDP streak by now.
If you're using Windows, I would recommend you take a screenshot of your CDP streak by hitting [Win] + PrtScn. That will save a picture of your streak to a folder called C:\Users\<your-name>\Pictures\Screenshots. If you ever need to have it restored again, you can use the date of that screenshot to calculate what your CDP should be.
Hope this helps.