Problem

How to get rid of routed temporary files left in $p_runtime_dir/tmp/ folder?

First of all, in the peltrans command, the -po option should be set to Y, to enable purging of these files. (If you create a transfer via Navigator, then the equivalent is to set the Purge option, on the first tab of the transfer, to Yes.) Second, use the pelpur command with the -pf option.

If after that there are still such files left, you can delete them manually.