Excel - 从列中删除第一个第 n 个破折号并保留最后一个

Question

I have data in a column like this. I need to remove all the dashes with the exception of the last, right dash.

So data in the column like this:

QQQ-NE
Q-A-123-N
Q-B-234-BE
Q-BB-999-RW

To this

 QQQ-NE
 QA123-N
 QB234-BE
 QBB999-RW

I assume I use SUBSTITUTE() . But how I can just leave the last dash?

Thanks in advance

Answer 1

Probably can be simplified, but some nested SUBSTITUTEs works:

=SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(A1,"-","~",LEN(A1)-LEN(SUBSTITUTE(A1,"-",""))),"-",""),"~","-")