Atlassian puts some low limits on the number of issues which can be returned through their API's, making it hard to pull out and pivot across large datasets. Their work-around is to use the 'startAt' parameter to pull multiple sets and then combine them, however there is no easy way to do this within Klipfolio; I believe you would need to set up multiple data sources and then map them back together. I reviewed the 'dynamic data source' documentation but I do not think this would be able to do what is needed here.
Given that this would impact any JIRA Cloud user, it would be a really nice feature to be able to configure a 'keep pulling until complete' option which would look at the 'total' field (which contains the total number of results in the search) and automatically increase the 'startAt' value until all of the issues are returned.
I realize that there could be latency or other processing implications, but I'd rather pull less frequently than need to build a separate data source for every 100 issues.