BD87 displaying all the idocs

Hi,

I found a strange issue with BD87,

When I copy and paste 999 idocs in BD87 and display those idocs, I can see 999 idocs.

When I copy and paste 1001 idocs in BD87 and display those idocs, I can see 1001 idocs.

But when I copy and paste 1000 idocs in BD87, it is displaying all the idocs in the system.

Did anyone faced a similar issue?

Regards,

Laxman