You might want to modify, add, or delete your debug cores post implementation. There are two ways to do it in Vivado® Design Suite.
If you want to replace the existing connections to the ILA cores, Xilinx recommends that you use the ECO flow. The ECO flow operates on an implemented checkpoint (DCP) and could save you time that could otherwise be spent in a complete re-route of the design.
If you want to add new ILA cores, delete existing ILA cores, or modify existing ILA cores (eg resizing probe width, changing the data depth, etc.), Xilinx recommends that you use the Incremental Compile flow. The Incremental flow for debug cores operates on a synthesized design or checkpoint (DCP) and uses a reference implemented checkpoint (ideally from a previous run of implementation). This could save you time that could otherwise be spent in a complete re-implementation of the design.
The sections below discuss each of these debug related flows in detail.