The only reason I am not moving my entire invoicing to GHL is because I cant change or update dates on the:

1) Invoice date - Moving to GHL requires me to enter my past invoices, I cannot change the Invoice date

2) Update payment date - customers at times pay via other means like zelle and what not and I am unable to always update GHL, but the feature to enter a payment on a previous date but after the invoice date isnt there either.