Migrating from Version 8.0.1 This chapter addresses concerns for users of VA Smalltalk V8.0.1 who are migrating to the current release of VA Smalltalk. Before you beginning the migration steps in this chapter, make sure you have completed the pre-migration steps in Preparing for Migration. After you complete any needed migration steps mentioned in this chapter, you should continue to the subsequent chapters of this document to review further migration requirements. The topics covered in this chapter include the following: • Grease Core and Grease Core Tests maps are obsolete • EsString>>#subStrings: changed to be ANSI-compliant and portable • Random class and methods referring to it have been removed • SequenceableCollection>>#beginsWith: and #endsWith: have been replaced • Duration>>#milliseconds changed to be portable • IdentitySet class added as replacement for EsIdentitySet • Color class promoted from WbKernel to Kernel • SortedCollection private methods #sorted and #sorted: renamed