Has spreadsheet csv output changed?

Win7-64

7.0.3.1 (x64)

There is a string prefixed with “+AC” in my .csv output. This interferes with a program that I wrote to process calc output. Is there any way to restore the previous .csv output format?

I don’t understand when (or why) the string is output. I first thought it replaced cells which contain an embedded separator character, such as abc,def => +abc+AC0 def but I see that this occurs at other places. The result is that my program generates hyperlinks which are invalid and cells which contain text difficult to read.

For example:

Vector Models for Data-Parallel Computing
 =>  Vector Models for Data+AC0-Parallel Computing

and

https://github.com/rangaeeeee/books-os/blob/master/Distributed%20Systems%20Concepts%20and%20Design%20-%205th%20Edition.pdf
 => https://github.com/rangaeeeee/books+AC0-os/blob/master/Distributed+ACU-20Systems+ACU-20Concepts+ACU-20and+ACU-20Design+ACU-20+AC0AJQ-205th+ACU-20Edition.pdf

and

def+AC0ghi => def+-ACoghi