Loading a session doesn’t load custom tracks

[L]

1. I am using IGV v2.4.1
2. I originally BLATed a gRNA primer to a gene and it appeared as a new track. I also added 2 flanking PCR primers near this gene as well and they also appeared as new tracks. I then saved the session (it saved as an .xml) and quit the program. I then opened IGV and then went to “Open Session…” and opened the previously saved session .xml.
3. I expected that opening a previously saved session would also open the primer tracks I have added.
4. When it opened, it showed the gene I was looking at on the “Gene” track, but it did not load the tracks with the aligned primers that I had added. I looked at the text of the .xml file and it says that the tracks I added are in the file though.

Please help! I am new to using IGV and other genome browsers.

[James Robinson]

Hi,

I investigated this and you have encountered a limitation with IGV,  blat tracks are not recreated on session load.   I'm surprised this hasn't been reported before.  In any event I've entered this as an enhancement request here:  https://github.com/igvteam/igv/issues/468/     I will try to have a fix for the 2.4.2 release.   You can follow progress on github.

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