General Description: When I use the Spectrum Synthesis flow, the "Delete Implementation Data" command does not remove the EDN file if there is at least one remote source in the project. (This is happening ONLY in the Spectrum flows -- both VHDL and Verilog -- and ONLY when a remote source exists in the project.)
As the EDN file is the primary output for the Synthesize process, the Synthesize process does not go out of date after the implementation data is deleted, and the green checkmark remains.
Also, because of this problem, when I switch the flow from Spectrum to another synthesis tool, the EDN file remains in the project directory.
This problem occurs because the following line is missing from the file: leo-synth.fdk. The corresponding line is present is all other Synthesis flows.