Signal on waveform changes when realoading the trace

When viewing the trace on the valid bits on the pipeline (valid_pipe[0..4]) they are showing correctly as shown on the image

But after reloading the file they are modified all to be as the signal 0 from the pipe but showing with the name of each stage

After adding a new signal the name is updated to be all of them to the index 0.

I add to the issue the state to load and the fst trace