the test data can only be executed once?

Hi, experts,

I have created a couple of eCATTs and they work well.

but i noticed, that the test data either in txt file as a external file or in test data container as internal file can only be used one time. Without changing I can not active the same eCATT once more, althrough i have delete the change.

I got always a error:

...data is obsolete...

Is it so?

thanks

Kefei