The latest version of ZMI can be found at the link below.
https://www.mobileread.com/forums/sh...8&postcount=11
Partoonein, Zotero has had some technical database changes over the years which were causing your issue. See the attached results of my testing using ZMI with a few very minor tweaks. The Scalzi book was a simple Calibre import of a normal epub with no use of ZMI at all. It was then exported using the Link Option. Note that the Calibre screen snip shows no Z* Custom Columns are filled in, meaning it did not come from Zotero via an exported .csv file. Simple, normal Calibre ebook that was linked to Zotero.
DaltonST