you won't be able to delete the Transmittal Set Date as this is hard-coded into the program. you can simply choose not to use this field in your Revision History Objects for your title blocks & instead use the Date field that you created.
keep in mind that you now have to manually type the date before you publish anything.
Well unfortunately in a working environment contractors, suppliers, etc. want to amend little things that they forgot to add on that moment and don't want to make a big deal about this things that's why they will just simply say just use the same date you issued and this is where trouble occurs...
In the end what is your Objective? ArchiCAD 9 onwards
Barry yes in a perfect world. in this case I have made an error. I did NOT publish all the layout in the first issue. I now want to see all the drawings in the transmittal so Ii need to redo it from the start.