Team, I am having an issue updating a line on an Invoice that contains Billable Time lines. I try to set the value on the sublist “time”, but the sublist is not changed. Anyone has done this?

Doesn't those lines come from timebills, you will either have to create or update the timebills depending upon the scenario

thanks @raghav yes, I was able to do it. You need to update the timebill record, then also save the invoice.