Key figure description not show in BEx and WAD sometimes

Hi experts!

I have a big problem. Sometimes we have the effect that a report shows no key figures. I mean I see the numbers but no key figure description is shown.

Example (correct)

Country |    Hierarchy   |        Banking      |         ATM       |      ....     
-------------------------------------------------------------------------------------------------------
Germany |   Key figure 1 |           1.000     |         500       |      ....
-------------------------------------------------------------------------------------------------------
        |   Key figure 2 |                27   |           9       |      ....
-------------------------------------------------------------------------------------------------------
        |   Key figure 3 |                27   |           9       |      ....
-------------------------------------------------------------------------------------------------------
        |   Key figure 4 |                27   |           9       |      ....

Example (wrong)

Country |    Hierarchy   |        Banking      |         ATM       |      ....     
---------------------------------------------------------------------------------------------------------
Germany |                |           1.000     |         500       |      ....
---------------------------------------------------------------------------------------------------------
        |                |                27   |           9       |      ....
---------------------------------------------------------------------------------------------------------
        |                |                27   |           9       |      ....
---------------------------------------------------------------------------------------------------------
        |                |                27   |           9       |      ....

We can solve the problem if so we deleted the query from the cache but that is not really a good solution.

Any suggestions?

Regards, Thomas