Just FYI / not a big deal

Hello, Today I lose 17 rules on 27 rules in the plugin. Let me explain: I make change in a rule and I lauch save from here > /wp-admin/admin.php?page=crawlomatic_items_panel&crawlomatic_page=1 In the same time, I switch to another tab in chrome browser and in this other page I add change (I remove "Do Not Check For Duplicate Posts:") and lauch save from here > /wp-admin/admin.php?page=crawlomatic_admin_settings. When I return on crawlomatic_items_panel page, I find only 10 rules :( and I lose 17 rules. It's my fault and it's not a big deal, just wanna informe you. Best regard