Issues with Custom form styles. Modifying ANY of them applies the changes to all. Some customer are set with default but show an old one and can't change it. Help?

Hello and Welcome to the Community, dfmmjones 👋

There are specific fields of the Custom Form Styles, such as the company information, which are interlinked by default and so will update across all. 

Can we check which modifications, in particular, you are making? 🧐 

Its currently only possible to set one default template which will then apply to all customers/transactions, is this the template which is showing when previewing the invoice of those customers? 

Thanks!