@@ -, +, @@ 
    Testing plan:
    1. set CronjobLog to "Log"
    2. Run the three cron jobs
       `perl misc/link_bibs_to_authorities.pl; perl misc/cronjobs/merge_authorities.pl -b; perl misc/migration_tools/remove_unused_authorities.pl --confirm`
    3. Visit the log viewer /cgi-bin/koha/tools/viewlog.pl, select the "Cron jobs" module, & note it's empty
    4. apply the patch
    5. Repeat steps 2 & 3 but note the cron logs aren't empty
--- a/misc/cronjobs/merge_authorities.pl	
+++ a/misc/cronjobs/merge_authorities.pl	
@@ -7,6 +7,7 @@ use Time::HiRes qw( gettimeofday );
 use Koha::Script -cron;
 use C4::AuthoritiesMarc qw( GetAuthority merge );
+use C4::Log qw( cronlogaction );
 use Koha::Authority::MergeRequests;
 use constant RESET_HOURS => 24;
@@ -21,6 +22,7 @@ GetOptions(
 $|=1; # flushes output
 if ( $params->{batch} ) {
+    cronlogaction();
     handle_batch($params);
 } else {
     pod2usage(1);
--- a/misc/link_bibs_to_authorities.pl	
+++ a/misc/link_bibs_to_authorities.pl	
@@ -24,6 +24,7 @@ use C4::Biblio qw(
     LinkBibHeadingsToAuthorities
     ModBiblio
 );
+use C4::Log qw( cronlogaction );
 use Koha::Biblios;
 use Getopt::Long qw( GetOptions );
 use Pod::Usage qw( pod2usage );
@@ -70,6 +71,8 @@ if ( not $result or $want_help ) {
     usage();
 }
+cronlogaction();
+
 my $linker_module =
   "C4::Linker::" . ( C4::Context->preference("LinkerModule") || 'Default' );
 unless ( can_load( modules => { $linker_module => undef } ) ) {
--- a/misc/migration_tools/remove_unused_authorities.pl	
+++ a/misc/migration_tools/remove_unused_authorities.pl	
@@ -25,6 +25,7 @@ use Modern::Perl;
 use Koha::Script;
 use C4::Context;
 use C4::AuthoritiesMarc qw( DelAuthority );
+use C4::Log qw( cronlogaction );
 use Getopt::Long qw( GetOptions );
 use Koha::SearchEngine::Search;
@@ -42,6 +43,9 @@ if ( $want_help || !($test || $confirm) ) {
     print_usage();
     exit 0;
 }
+
+cronlogaction();
+
 if ($test) {
     print "*** Testing only, authorities will not be deleted. ***\n";
 }