[Info-vax] how to ignore (some?) errors during backup ?

[Pierre]

hi,

I sometime have this error during a backup

%BACKUP-E-OPENIN, error opening $1$DGA1:[]FILE.EXT;1 as input
-SYSTEM-W-NOSUCHFILE, no such file

for what I know, the quoted file is either being moved from a
directory to another by a detached process or being deleted by the
same detached process once used, while backup is trying to copy it.

the problem is that this error seems to stop the backup :(
is there a way to ignore such errors ?

the backup command is :
$ BACKUP $1$DGA1: /IMAGE $1$DGA2:[BACKUP]DGA1.BCK/SAV /IGNORE=(INTER)

VMS is 8.3

TIA,
Pierre.