_module.params before save
{"moduleclass_sfx":"box1","getTemplate":"Contact","source":"specific","catfilter":"0","getChildren":"0","itemCount":"5","itemsOrdering":"","FeaturedItems":"1","popularityRange":"","videosOnly":"0","item":"0","items":["104"],"itemTitle":"0","itemAuthor":"0","itemAuthorAvatar":"0","itemAuthorAvatarWidthSelect":"custom","itemAuthorAvatarWidth":"50","userDescription":"0","itemIntroText":"0","itemIntroTextWordLimit":"","itemImage":"0","itemImgSize":"Small","itemVideo":"0","itemVideoCaption":"0","itemVideoCredits":"0","itemAttachments":"0","itemTags":"0","itemCategory":"0","itemDateCreated":"0","itemHits":"0","itemReadMore":"0","itemExtraFields":"1","itemCommentsCounter":"0","feed":"0","itemPreText":"","itemCustomLink":"0","itemCustomLinkTitle":"","itemCustomLinkURL":"http:\/\/","itemCustomLinkMenuItem":"273","K2Plugins":"1","JPlugins":"1","cache":"1","cache_time":"900","module_tag":"div","bootstrap_size":"0","header_tag":"h3","header_class":"","style":"0"}

_module.params after save
{"moduleclass_sfx":"box1","getTemplate":"Contact","source":"specific","catfilter":"0","getChildren":"0","itemCount":"5","itemsOrdering":"","FeaturedItems":"1","popularityRange":"","videosOnly":"0","itemTitle":"0","itemAuthor":"0","itemAuthorAvatar":"0","itemAuthorAvatarWidthSelect":"custom","itemAuthorAvatarWidth":"50","userDescription":"0","itemIntroText":"0","itemIntroTextWordLimit":"","itemImage":"0","itemImgSize":"Small","itemVideo":"0","itemVideoCaption":"0","itemVideoCredits":"0","itemAttachments":"0","itemTags":"0","itemCategory":"0","itemDateCreated":"0","itemHits":"0","itemReadMore":"0","itemExtraFields":"1","itemCommentsCounter":"0","feed":"0","itemPreText":"","itemCustomLink":"0","itemCustomLinkTitle":"","itemCustomLinkURL":"http:\/\/","itemCustomLinkMenuItem":"273","K2Plugins":"1","JPlugins":"1","cache":"1","cache_time":"900","module_tag":"div","bootstrap_size":"0","header_tag":"h3","header_class":"","style":"0"}