Prevent losing values on Bindings?

I’m reconforming a Cantabile setup and need to pull data from several other songs.
When copy/pasting binding data, it’s common to find the source and destination need redefining, and in that process the Value column gets wiped out, and this is typical of any binding which loses its way and has to be reestablished. Once it’s flipped through some incompatible sources and destinations, you’re left with the default.
Can anyone recommend a way to export this text into something readable and which could then be copy/pasted back in?
I bow in your general direction.