I was just investigating the same thing. I have not found any way to convert existing reports from report designer (RDL/XML format) to Report Studio (JSON). which makes us stuck with report designer for the time being.
It would be great to get some insights regarding the roadmap of these tools as I would assume that report designer eventually will be removed.

Ouch, yeah, it’s probably the same story as with the change from Report Builder to Report Designer many moons ago: redo from scratch.

I’m curious about those “limitations when working with custom fields”. Are they documented anywhere? I couldn’t find anything in the tech docs: https://docs.ifs.com/techdocs/24r1/060_development/025_operational_reporting/060_report_studio/

I was curious as to whether Report Studio can generated QR code, which would help my customer (since Report Designer can only do 2D barcodes), but that’s probably way too much to ask.

I’m honestly scratching my head a little. At least the current Report Designer layouts are based on a proposed standard from Microsoft (https://en.wikipedia.org/wiki/Report_Definition_Language), so the technical platform in itself is okay. It’s just the Java based Report Designer UI that’s tredacted]. But Report Studio seems based on something propriety from https://www.devexpress.com/.

And I was wrong about IFS Report Designer not supporting QR Codes. It does:

D-oh!