In September 2024 Clarivate put two of the world’s largest journals on hold in the same announcement. Web of Science stopped indexing new content from Heliyon and from Cureus while it reviewed them both. Clarivate says around 85% of journals put on hold are eventually delisted. Heliyon landed in the other 15%. Elsevier’s research integrity team audited it, and the publisher issued about 1,100 corrections to the scientific record. Cell Press told Retraction Watch the exact figure was 1,197, of which 687 were retractions, 80 expressions of concern, 317 corrigenda, 108 editor’s notes, two withdrawals and three removals. The audit “revealed behaviors that did not align with our policies.” The publisher says the corrections touch roughly 3 percent of twelve years of output. The hold came off on 14th May. Missing content was backfilled by a 1st August cutoff, which is Clarivate’s condition for getting a metric that year. A new impact factor is due in October. Cureus did not do that. It was delisted on 27th October 2025 and lost its impact factor. Heliyon published 4,007 papers in 2022, 17,573 in 2024, and about 2,800 in 2025. Publishing there costs up to $2,270, with automatic waivers for authors in lower income countries. Nothing in the record shows the indexing hold caused either the retractions or the collapse in volume, and a journal that quadruples output in two years accumulates problems whether or not anyone is watching. Heliyon’s own website today still displays an impact factor of 3.6. It was awarded for 2024, in the last edition released before the hold cost the journal a cycle.