In the directory
/usr/local/bm/conf/.WWW_Container.lrtmp/ (PBA 5.4) or
/usr/local/bm/var/run/.WWW_Container.lrtmp (PBA 5.5) there are some files. What are these files?
These are temporarily files that are created under certain circumstances when big lists are exported to Excel. They are not deleted automatically because of the bug #PBA-56638.
These files can safely be deleted manually. The bug will be fixed with one of the upcoming product updates.