Some tracing tools such as Citrix CDFControl55 have an option to split software traces and logs into several files during long recording. Although this should be done judiciously it is really necessary sometimes. What to do if we get several trace files and we want to use some other analysis tool such as Citrix CDFAnalyzer56? If we know that the problem happened just before the tracing was stopped we can look at the last few such files from the file sequence (although we recommend a circular trace here, Volume 3, page 346). Otherwise we can convert them into CVS files and import into Excel which also supports adjoint threading57.