missing Time Signature, insert missing Time Signature without changing all measures.
Downloaded a file in Musescore, import PDF.
Only one serious error in the imported music.
The double a-c note in the last image was a 3/2 sign in the first image.
The only thing is to replace the a-c double note with a time signature 3/2.
But that results in a rebuild of all measures after the time signature.
How to insert a Time signature 3/2 without changing all those measures?