LOAD-OF-PROGRAM re-loaded?

Question

Hello SAPients.
It's supposed that the LOAD-OF-PROGRAM event should run only once in the very begining of the program, right? Do you know why it is running again when I go back to the selection screen? It's clearing some internal tables that I still need available.
Thank you in advance for your kind help.

Answer 1

LOAD-OF-PROGRAM.
Effect
This event keyword defines an event block whose event is triggered by the ABAP-runtime environment when an executable program, a module pool, a function group or a sub-routine pool is loaded in the internal session.
When calling a program through SUBMIT or through a transaction code, then, at every call, a new internal session is opened and the event block is executed once at every call. You can initialize global data objects of the program here.
At the first call of an external Procedure (sub-program or function module), the framework program of the called procedure is loaded into the internal session of the caller, thus triggering the event LOAD-OF-PROGRAM. The event block is executed before the called procedure. At any further call of a procedure of the same framework program by a caller of the same internal session, the event LOAD-OF-PROGRAM is triggered no longer.
Note
The event LOAD-Of-PROGRAM should mainly be used to initialize global data when calling external procedures or Transactions. If you call executable programs with SUBMIT, we recommend that you use the event INITIALIZATION, as the Starting values for parameter and selection criteria are set after LOAD-OF-PROGRAM
reward points if it is usefull ...
Girish