FTSE Russell announced on 22 February 2023 an amendment to the Semi-annual Index review published on 17 February 2023 ( published on QSE website on 19 Feb. 2023) saying that IGRD won't be added to FTSE Global Equity Index Series Small Cap Index but only deleted from FTSE Global Equity Index Series Micro Cap Index.
You can see the link for the announcement below:
https://research.ftserussell.com/products/index-notices/home/getnotice?id=2607129