Hi Jacob,
If it's working, then you are good and no need for additional mapping or steps. Is it showing in control or system tab?
For question 2, you need the do the same thing as we did for EXPEV.
READ TABLE es_evm_tables-header REFERENCE INTO lr_evm_hdr INDEX 1.
select tor_type
from ZYOUR_SYSTEM_PARAM_TABLE
into lv_tor_type
where <FO_NUM> eq lr_evm_hdr-trxid. " FO_NUM is from system parameter table
This will give you your parameters. If it's control parameter, then do select on /saptrx/eh_cntrl
For your clarification:
If you add it as a control in EVM_PAR_STRUCTURE in pre-processing, these will be available in RESEND as well and will go to FU as control paramters as well. You might not need any additional logic. Just "Parameter update new" activity in your FU ruleset.
Thanks,
Vishnu