If gst invoices saved are not showing properly in gst reports,follow these steps
Step 1 Just open the invoice which is not reflecting in gst reports properly
Step 2 Check all details are mentioned correctly like date,party and other item details
Step 3 Check sale type is selected properly and on sale type,use alt+M shortcut key to open it and check all gst accounts are tagged properly and it affects gst reports,then save it
Step 4 Check in item by opening it in modify mode,tax category is tagged in it and then save
Step 5 Check in bill sundry if tax applied in proper and then resave voucher and check in gst reports
Step 6 Also you can update gst report under housekeeping option if all invoices are not updated in gst reports and then check in relevant section in gst reports
Note:Before making any changes,must take backup of company