Figure 1 shows the situation without added grouping, with no export option. Figures 2 and 3 show the options with added grouping, which then supports export.
By the way, every time a new API/character card is opened, the regex has to be re-imported, which is a bit cumbersome… Can it be set to a prompt-like form? Opening a global setting would allow it to be enabled by default in all conversations.