Fate of publications under review after accepting a tenure-track offer "A", an independent researcher, has accepted a tenure-track offer* and will be starting in few months from now. "A" also has few manuscripts that are currently under review in high impact journals. Say that 1-2 manuscripts are accepted before "A" joins his/her new institution, will it be ethical/possible for "A" to contact the editors to ask them to delay publishing his/her accepted manuscript(s) to a later issue to when "A" joins his/her new institution? The rationale is that this new work won't be counted toward his/her tenure if it is to be published before he/she joins the new institution. 

*This scenario is for an R1 school in the US.

Please note that "A" has discussed this issue with his/her new Dept. Chair as well as a senior mentor who serve at T&amp;P committee (at a different school) and both advised to contact the editors for this manner.
I do not think it is either ethical or wise to try to delay the publications, anyone looking at the researcher will be equally impressed by a paper regardless of the address on it when it was published.