Sage 100

I have 7 out of 11 invoices from a Sales journal that are "not on file" when searching in A/R Invoice History. The invoices are listed in their respective Customer Inquiry Invoices tab- but doesn't open a view of the invoice. The entire Sales Journal…

Once every 1-2 weeks I rebuild all sort files and am wondering if I should also be rebuilding the key files? Is there any risk/downside to rebuilding the key files? Also, when I am running the utility do I want Integrity Check and Optimize File checked…