The old style Swish Sologlyde brackets have been discontined since around 2004.

 

We would recommend replacing your track if you have the old Style Dovetail track.

However for those of you who would like to mend and make do then you can use the Universal Dovetail brackets as a stop gap.
PLEASE NOTE you will need to splay the bracket open to get it to fit and you will also need slightly longer grub screws which are not supplied.
The photo's below demonstrate that these brackets can be used on the Dovetail Sologlyde curtain track.

 
  

And here you can see that the Sologlyde Glider which hasn't changed in design will pass the bracket.