## 1.4. Migrating ACP Projects from Previous Versions

All versions between 14.0 and the current release are compatible.

When opening ACP projects generated in a previous version, you should do a Clear Generated Data on the ACP (Pre) Setup cell. All data and definitions are transferred to the new system.

Version 17.0 introduced a new workflow for ACP. The existing workflow from previous versions is still valid. If you wish to upgrade your projects from previous versions to the new composite workflow, please contact your technical support representative.

Version 18.0 changed the material scripting interface for ACP. A material's properties (for example engineering constants and stress and strain limits) are not longer members of the Material class, but each properties forms its own class instance of the type PropertySet. This is to better reflect the individually closed data basis for data interpolation in case the properties depend on user-defined field variables (see Variable Material Data in Composite Analyses). The PropertySet instances can be accessed by their string key on the Material class. ACP scripts using materials must be updated to be compatible with the new material properties.

Release 18.2 - © ANSYS, Inc. All rights reserved.