Hi Elle, thanks for the response. To give context, our data product provides two search experiences to customers and is currently built on top of Elasticsearch, and we what to migrate to Atlas search. For general search, we already build in business logic using compound, facet, filters, etc. But for advanced users (eng, analytics, etc), we provide the capability to allow them to write queries using Lucene syntax and get exactly what they want in ad hoc search. Lucene natively supports wildcard ?* and fuzzy search ~ in query string, and so does Elastic. Our customer finds it very useful, e.g. they can grab all datasets starting with sales by querying dataset:sales*. We certainly don’t want regression in this feature during our Atlas search migration. This is blocking us right now.