Powerful software but with significant drawbacks

Global Shop is well over 40 years old already. While the company is clearly trying to modernize the platform, I feel they are weighed down with a lot of tech debt and it seems that they are struggling to keep up with more modern system. In my opinion, the tech debt comes out in reliance on Zen/Pervasive databases, inconsistent UI/UX, and lack of API support (coming, purportedly).

UI/UX is terrible in my experience. Finding anything is very difficult and most users simply memorize the path to the items they need and never use the system outside of what they know.

A simple example: to view a previously created invoice, one might expect to navigate to invoices, find the appropriate invoice from a list, and click to view. In Global Shop the menu path is Customers & Prospects > Order Entry > Reports > Reprint Invoice. Completely unintuitive in my opinion. To my knowledge, there is no "Invoice" button that shows simply all invoices without a custom plugin.

Zen/Pervasive database may be fine for smaller environments, but issues start coming up with larger datasets and compatibility issues in development environments where Microsoft SQL Server is considered a standard.

Tech debt leads to constant bugfixes, and new features seem to be frequently broken on release or break previously established functionality. This can be exacerbated in environments with heavy GAB customization where database and method changes may break existing GAB functionality.