Question: I have a report I am doing with SSRS 2008 with some rows that have multiple elements inside them. On the preview the row automatically expands to support the extra elements but however when I export the report to Excel it appears only as a single row with just the one element displayed, although all the elements are there when I double click the row or manually expand it. 

I've checked everything...Can grow is set to true and the properties on the text box allows it's height to increase however it seems to ignore these.

Here it is in the preview
<http://tinypic.com/r/b4wbdg/8>

In Excel
<http://tinypic.com/r/r084g3/8>

Sorry about the links to the pictures and not in this question

Answer: 
Both CanGrow and CanShrink properties should be set to false
This must be done for all cells in the row of the Tablix!!
Otherwise the data is not properly exported.
reduce the widths of the rows and it fixed my problem