In Salesforce Classic using url hack button field is not prepopulating if its not added on Page layout, If its present on page layout its populating

Question

{!IF($User.UIThemeDisplayed="Theme4d", URLFOR('/lightning/o/Opportunity/new?defaultFieldValues=AccountId='+Account.Managed_by_Sales_LocationId__c+',BSL_Account_Id__c='+Account.Id+'&recordTypeId=012D00000002rUgIAI&nooverride=true&backgroundContext=/lightning/r/Account/'+Account.Id+'/view'), URLFOR('/006/e?retURL='+Account.Id+'&recordTypeId=012D00000002rUgIAI&opp4='+Account.Managed_by_Sales_Location__c+'&opp4_lkid='+Account.Managed_by_Sales_LocationId__c+'&00N1x00000WsuhP='+Account.Id+' ') )}