In V8i, a grouping of files and associated data was referred to as a “Project”. In CONNECT Edition that is now referred to as a “WorkSet”. Migrating a V8i Project to a CONNECT Edition WorkSet will require some change to the configuration, the creation of a companion .dgnws file ( which holds the WorkSet's properties, Sheet Index and LinkSets) and may entail some folder structure changes. A general outline of these CONNECT changes can be found at Migration to CONNECT Edition - What Configuration Changes have been made in Power Platform?
Note that the Active Workset is indicated in the Status Bar:
To assist in conversion from Migration V8i Project to a CONNECT Edition WorkSet, Bentley has provided a Configuration Migration Utility. Below are two article that can assist you through the process.