You can re-customize existing IP in either an RTL project or in a Manage IP project. To open the IP customization dialog box for an IP, either double-click the IP, or in the IP Sources view, right-click the IP, and select Re-customize IP from the context menu.
Change IP configuration settings, and click OK. The Generate Output Products dialog box opens for you to re-generate output products. Alternatively, you can review the current settings, and click Cancel to keep the settings intact.
When you do make changes to the IP configuration and generate the output products, the existing products are reset and, if enabled, the design run resets and launches again.
Xilinx recommends that you always generate the output products for IP, including the synthesized DCP; however, if you do not generate output products after customizing, or re-customizing the IP, the Vivado Design Suite generates the output products automatically, as needed; for example, when synthesizing the top-level design.