When I use JQL :
project = IMDX AND issuetype in (Epic, Story) AND text ~ "IZ-"
I get a list of issues that contain IZ- in the summary;
however, when I use:
project = IMDX AND issuetype in (Epic, Story) AND text ~ "IZ-"
I do not get any issues found and there are issues that contain IZ-AD in the summary field