Questions about working with older Crystal Report files

Greetings:

     I am using Crystal Reports 13.0.2 for Visual Studio 2010.  I want to edit older report files that work with CRAXDRT.dll (version 8.5.0.0).  I wish to change the SQL Query inside the reports.  In particular, I would like to change the SQL Queries so that the column names are not enclosed in double quotes.  I then want to save the edited report files in the older format (not in the newer format - I got a TLV error when a program tried to read the files in the newer format).

     To summarize:

1.     Is there a way to change the SQL query of older report files?

2.     Can one save any changes in the older format (the format the files are currently in)?

3.     Is there any documentation on the classes inside the CRAXDRT.dll file?

Thank you for your time.

EA