Regex in Notepad++ to remove certain CRLFs - regex

Question

Given this sample data:
00-1234T|`CRLF`
Data|Commments|`CRLF`
12-3456|Some data|Notes|`CRLF`
65-8436ZZ|Data|`CRLF`
|`CRLF`
45-4576AA|Some data|Comments|`CRLF`
98-4392REV|Data|`CRLF`
|`CRLF`
00-5432|Some Data|Some Comments|
(I added the "CRLF"s to each line to more clearly illustrate what is there and what needs to be replaced)
Each record should only have three pipes in a line, with a CRLF after the third pipe. So lines 1, 4, and 7 (pre-find/replace) need to be fixed, which means any CRLFs before the third pipe needs to be replaced with a "placeholder", which will be "#CRLF#".
The closest I've been able to come up with is ^((?:[^\v|]*\|){3})(.+), which will match (highlight) lines 3 & 4, 6 & 7, and 9 & 10. My expectation (requirement) is to find the CRLFs in lines 2, 5, & 8 and replace those with "#CRLF#".
[UPDATE]
After sleeping on this question, I woke up realizing that, for the purpose of more accurately finding the beginning of a given record - whether on one line or multiple - I should add that the first column will always start with the pattern [0-9][0-9]-[0-9][0-9][0-9][0-9] and possibly have up to three alphanumeric characters after that.
I modified the sample data above to reflect that.

Answer 1

Ctrl+H
Find what: \R(?!\d\d-\d{4}\w{0,3}\|)
Replace with: #CRLF#
CHECK Wrap around
CHECK Regular expression
Replace all
Explanation:
\R # any kind of linebreak (i.e. \r, \n, \r\n),
if you want to match only windows EOL, use \r\n
(?! # negative lookahead, make sure we haven't after:
\d\d-\d{4} # 2 digit dash 4 digit
\w{0,3} # word character from 0 upto 3
\| # a pipe
) # end lookahead
Screenshot (before):
Screenshot (after):

Answer 2

This should get you started.
The regex just captures the parts between pipes then re-writes on the substitution.
Any CRLF's are not captured and get stripped out.
But this is very simplistic and may need to change if your input is any more complex.
(?m)^([^|\r\n]*)[\r\n]*\|[\r\n]*([^|\r\n]*)[\r\n]*\|[\r\n]*([^|\r\n]*)[\r\n]*\|[\r\n]*
Replace using: $1|$2|$3|\n
https://regex101.com/r/WzDLwf/1
updated answer
To answer your updated question, if you need to make it like mail merge,
it could also be done like this (as an alternative to Toto's method).
(?m)
(?:
^ \d{2} - \d{4} [^|\r\n]* \|
| \G
)
(?: [^|\r\n]* \| )*
\K
[\r\n]+ (?! [\r\n]* (?: ^ \d{2} - \d{4} | $ ) )
https://regex101.com/r/qK4SJP/1