I need to remove the new line character from the middle of a data. Here is the sample line items.

File: abc.txt
File_Name|abc.txt|date|04212019|this is one full line|Client_name|Whole
File_Name|abc.txt|date|04212019|half data is good
File_Name|abc.txt|date|04212019|Sample data
is split|Client_Name|Marshals
File_Name|abc.txt|date|04212019|this is good again|Processing_date|03282019
File_Name|abc.txt|date|04212019|line is not good 
again|Processing_date|04232019

I want the data to be like this:
File_Name|abc.txt|date|04212019|this is one full line|Client_name|Whole
File_Name|abc.txt|date|04212019|half data is good File_Name|abc.txt|date|04212019|Sample data is split|Client_Name|Marshals
File_Name|abc.txt|date|04212019|this is good again|Processing_date|03282019
File_Name|abc.txt|date|04212019|line is notgood again|Processing_date|04232019

Any help is much appreciated?