Upgrade Storagebiblatex citation keys join parameters with _
I had to rebuild my computer and so I have dozens of documents with citation keys of the format author+shorttitle+year. However, the parameters are not separated by any character. Now, in better biblatex this key is producing something similar but it is separating the parameters with underscores:
`auth.lower + shorttitle(3,3) + year`
How do I get auth.lowershorttitle(3,3)year, effectively?
`auth.lower + shorttitle(3,3) + year`
How do I get auth.lowershorttitle(3,3)year, effectively?