Heeyy, here’s a 3 minute Loom. Any help is much appreciated 
Hey @daniel.apro!
When Finsweet multi-reference fields (CMS multi-reference / multi-select) don’t sync correctly in Webflow, it might be caused by one (or a combination) of these common issues:
CMS API Cache or Index Delay, Webflow’s CMS sometimes does not immediately re-index multi-reference changes. Items updated in CMS but Filters / CMS List don’t reflect changes, it works on some pages but not others or appears fixed after republishing or reloading editor
Try republish site (full publish, not single page), Clear Webflow Editor cache (logout/login, Duplicate affected CMS item, delete original, republish then Toggle the multi-reference field, remove all references, save, add again and save
Also check for field slug mismatch, If you renamed a multi-reference field after connecting it, Finsweet still looks for the old slug.
Another check is to make sure there are no multiple references with the same value that might be causing a collision issue. No two referenced items should share the same name
Also make sure it’s not a webflow workspace transfer bug, after transferring workspace, things might break. What might have happened is; CMS connection IDs change, references appear visually correct while underlying API reference breaks
For the affected multi-reference fields, re-create field (not rename) then reassign references and finally rebind CMS element