ASM Auto Management of directories after archivelog deletion

Our backup job is scheduled to take backup of DB + ARCHIVELOGS AT 7:00 am. Today morning when i checked archive logs on ASM i found folder of ARCHIVELOG missing under FRA. Then i checked last log switch time. it was 7:16am.


ASMCMD [+HOMEDBFLASH/HOMEdb] > ls
AUTOBACKUP/
CONTROLFILE/
ONLINELOG/

Then i manually switched a log using alter system switch logfile;

and again checked status of Files and Dirs on HOMEDBFLASH

ASMCMD [+HOMEDBFLASH/HOMEdb] > ls
ARCHIVELOG/
AUTOBACKUP/
CONTROLFILE/
ONLINELOG/

ASMCMD [+HOMEDBFLASH/HOMEdb] cd archivelog
ASMCMD [+HOMEDBFLASH/HOMEdb/archivelog] > ls
2012_12_12/
ASMCMD [+HOMEDBFLASH/HOMEdb/archivelog] > ls
2012_12_12/
ASMCMD [+HOMEDBFLASH/HOMEdb/archivelog] > cd 2012_12_12/
ASMCMD [+HOMEDBFLASH/HOMEdb/archivelog/2012_12_12] > ls
thread_1_seq_29892.4138.801833665