dl-breadcrumbs__homedl-breadcrumb-item__separatorConfiguration and programmingdl-breadcrumb-item__separatorProgramming with CODESYSdl-breadcrumb-item__separatorAutomation Builderdl-breadcrumb-item__separator...dl-breadcrumb-item__separatorProgramming of Applications dl-breadcrumb-item__separatorData Persistence dl-breadcrumb-item__separatorPreserving Data with Persistent Variables dl-breadcrumb-item__separatorImporting of CODESYS V2.3 Gateway Server projects
dl-pagination__prev-inactivedl-pagination__prev-activedl-pagination__next-inactivedl-pagination__next-active
Importing of CODESYS V2.3 Gateway Server projects dl-permalink__symbolPermalink

When you open a CODESYS V2.3 Gateway Server project to import it into CODESYS V3, the declarations of persistent variables are not preserved. You have to revise the declarations and create then again in a separate persistent global variable list.