This problem is addressed in MECIR. The results of systematic reviews may become out of date when new relevant trials become available and thereby provide misleading information to decision makers if they are not updated when necessary.
Articles that support this problem:
Investing in updating: how do conclusions change when Cochrane systematic reviews are updated?
2005 : Bmc medical research methodology
How quickly do systematic reviews go out of date? A survival analysis
2007 : Annals of internal medicine
How to decide whether a systematic review is stable and not in need of updating: Analysis of Cochrane reviews.
2020 : Research synthesis methods
Reporting quality of Cochrane systematic reviews with Chinese herbal medicines
2019 : Systematic reviews
Following 411 Cochrane protocols to completion: a retrospective cohort study
2008 : Plos one
A descriptive analysis of child-relevant systematic reviews in the Cochrane Database of Systematic Reviews
2010 : Bmc pediatrics
The life and death of living systematic reviews: a methodological survey
2023 : Journal of clinical epidemiology