Replace CR/LF between two delimiter ~ across multiple lines

[Pat Chown]

I need to link to a text file to get “blurb” for product with file layout is [KEY###] ~blurb copy in multiple lines and CR/LF~ (delimited by ~

See sample text below

I’ve tried ((?:^|\r\n)[^~]+“[^\r\n”]+)\r\n([^~]*+")

770939 ~<center><i>“abc abc abc”</i>CR/LF
-123456abcabc</center>CR/LF
<p>CR/LF
the qucik brown foxthe qucik brown foxthe qucik brown foxthe qucik brown foxthe qucik brown foxthe qucik brown foxthe qucik brown foxthe qucik brown foxCR/LF
<p>CR/LF
it was a dark and stormy nightCR/LF
<p>CR/LF
cane you<i>BELIEVE</i> this is real-life.CR/LF
…~CR/LF

[Scott Sumner]

@Pat-Chown

Well, it is pretty difficult from your description to tell exactly what you want to do, but a Find-what box value (for a regex search) that will match into group #1 the multi-line data delimited by the ~'s would be: \d{6}\s~(?s)(.+?)~

Hopefully this is of some help to you. If not, feel free to describe your situation a bit more. :-)