2v20 writeJSON optimization broke my app [Workaround]

@Gordon Could we also currently have an issue with backup/restore? I just tried a backup from one Watch and restore on the other and the json files can no longer be read, e.g. sched:

require('Storage').readJSON('sched.json',0)
Uncaught SyntaxError: Got ID:t expected '}'
at line 1 col 3 in sched.json
[{t:53100000,del:false,on:false,rp:false,as:false,dow:127,la...