I am using SQL server 2012, & always use SP_HELPTEXT to get my previously created Stored Procedures, In previous versions of SQL server there were no issues
A better workaround (compared to use Results to text) in my opinion is to create an sp_helptext2 storedproc as explained here:
http://sql-javier-villegas.blogspot.com/2012/08/a-workaround-for-sphelptext-bug-in-ssms.html
Note: that solution has a bug leaving out the last line if there is no new line at the end. Corrected T-SQL:
CREATE PROCEDURE [dbo].[sp_helptext2] (@ProcName NVARCHAR(256))
AS
BEGIN
DECLARE @PROC_TABLE TABLE (X1 NVARCHAR(MAX))
DECLARE @Proc NVARCHAR(MAX)
DECLARE @Procedure NVARCHAR(MAX)
DECLARE @ProcLines TABLE (PLID INT IDENTITY(1,1), Line NVARCHAR(MAX))
SELECT @Procedure = 'SELECT DEFINITION FROM '+db_name()+'.SYS.SQL_MODULES WHERE OBJECT_ID = OBJECT_ID('''+@ProcName+''')'
insert into @PROC_TABLE (X1)
exec (@Procedure)
SELECT @Proc=X1 from @PROC_TABLE
WHILE CHARINDEX(CHAR(13)+CHAR(10),@Proc) > 0
BEGIN
INSERT @ProcLines
SELECT LEFT(@Proc,CHARINDEX(CHAR(13)+CHAR(10),@Proc)-1)
SELECT @Proc = SUBSTRING(@Proc,CHARINDEX(CHAR(13)+CHAR(10),@Proc)+2,LEN(@Proc))
END
--* inserts last line
insert @ProcLines
select @Proc ;
SELECT Line FROM @ProcLines ORDER BY PLID
END