I will lay this out for you very clearly for all so there are no misconceptions. What Rockstar does not like to advertise is that every account is actually entitled to a one time rollback for re transfer upon request only (these are intended to use in such cases for example let's say if a account did not transfer properly or something) Now with this loophole we can use this to our advantage.
If approved (You need to bullshit your reason as to why you should be permitted a one time reset. Example would be my brother accidentally deleted my character or some shit nothing to complicated keep it simple (Also use your own excuse if they notice a rapid influx of caller's reporting the same issue they will eventually figure out what's going on so keep the "Problem/issue" different.
You will then be permitted the one time re transfer.
Other than that once transferred that's it. To also entice them to issue the one time re transfer you need to let them know your aware that it's possible they can do such a reset. what do I mean by that?
for example if you call there support number and say your reason as to why you want a re transfer say something like my friend had a similar issue and was told by a support agent they would issue him a one time transfer. After expressing that they will then know you are aware they can do that for you one time only. if you are not aware of it 9 time out of 10 they will be very reluctant to do that for you. So just bring it up discreetly that they should do it for you to. Also if the first agent does not reset the transfer call again till you get a agent who does as some are hesitant to do so. Eventually you will get the reset if you have not already had one.
That's it if you were able to SE Rockstar into resetting your re transfer for you then you may freely do any more touch up's or mods on PS3 and re transfer. You should still have all the stuff you had on PS4 as well before the reset if not call them up again and complain.
Post your result's here I look forward into seeing how many will be successful with this!