Crystal Reports, TTX data sources

So... somehow i got chosen to learn some c11 design stuff not my forte by any means but gotta do what i gotta do.
Scenario as follows:  Reports are hosted on a remote server and to edit/change them we have to download the RPT file and then download a seperate TTX file that contains the additional fields we want to add to the report.  

We end up with a pre-existing data source in the RPT itself and a new TTX that contains all the data of the previous RPT ttx and the new additonal fields.

I can load in the new data source, but it see's both sources then in the database management, when I remove the first source obviously all the original fields in the report vanish as they were linked into the report not the new ttx fields.  So.. is there a way to merge the two together, or to manually edit in the new fields from the new TTX to the old TTX?

When i look at the data sources, it shows it's storage location but that storage location doesn't actually exist from what I can tell (in fact it's point to a location on a server that doesn't even exist anymore).

Thought it would be a simple process to merge the two TTX files into a single working datasource but seemingly I'm wrong.. or lacking the knowledge to do so.

Any thoughts?
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