diff --git a/root/etc/e-smith/db/configuration/migrate/ImapsLimits b/root/etc/e-smith/db/configuration/migrate/ImapsLimits
new file mode 100644
index 0000000..38a5270
--- /dev/null
+++ b/root/etc/e-smith/db/configuration/migrate/ImapsLimits
@@ -0,0 +1,12 @@
+{
+
+# Those limits are now defined on the imap entry
+foreach my $prop (qw/ConcurrencyLimit ConcurrencyLimitPerIP ProcessMemoryLimit/){
+    my $imaps_value = $DB->get_prop_and_delete('imaps', $prop);
+    next unless ($imaps_value);
+    my $imap_value = $DB->get_prop('imap', $prop);
+    next if ($imap_value);
+    $DB->set_prop('imap', $prop, $imaps_value);
+}
+
+}