Generate RDLC line chart report with combained two report in 2005.

Hi all,

I trying to genereate the rdlc report in VS-2005 by combaining  two diffrent reports,

the line was not draw to the the point when we deploy the report application in 2008 environment

in 2005 deployment environment its working fine, 

Ex. 

X axis          1/Aug/2014    4/Aug/2014   8/Aug/2014      8/Aug/2014            10/Aug/2014             11/Aug/2014

Y axis            2                    4                        6                  8                              10                        12

For Report 1

  X axis data -     1/Aug/2014    4/Aug/2014       10/Aug/2014     

  Y axis datat-       2.1                    3.0                    6.0

For Report 2 

  X axis data -     1/Aug/2014    4/Aug/2014        8/Aug/2014            10/Aug/2014             11/Aug/2014                 

  Y axis datat-       6                    4                          6                          5                                 6.5

When I combained above reports the line will not ploted by joining those points because in 2005 they handle null to draw a line i.e. for 8/Aug no data avail in first report after 

4 Aug data is avail for 10 Aug only but second report has the value for  6 & 8/Aug at this point 6 & 8/Aug has not data so  no need to down the line to ZERO postion in x axis. 

Line draw for the report success fully in 2005 environment but in 2008 environment point only marked line won't connec those.

I need this

Its come like this

Solution plz