Relinking transcoded video to original video changes the Media Start to 00:00:00:00 for all clips

[#1]

I have edited the video on transcoded HD footage and when I am relinking to original 4K footage (shot on SonyA7R3) the media start is changing to 00:00:00:00 for all clips. The original media start for all clips is different and not 00:00:00:00. The media start of transcoded footage and original footage is same. When I go to interpret footage and set the timecode to Original timecode I get my media start as it should be but then it again sets to 00:00:00:00 when I reopen the project.

This is creating problem when I export XML from Premeire and try to import in Resolve. 

[#2]

I have edited the video on transcoded HD footage and when I am relinking to original 4K footage (shot on SonyA7R3) the media start is changing to 00:00:00:00 for all clips. The original media start for all clips is different and not 00:00:00:00. The media start of transcoded footage and original footage is same. When I go to interpret footage and set the timecode to Original timecode I get my media start as it should be but then it again sets to 00:00:00:00 when I reopen the project.

This is creating problem when I export XML from Premeire and try to import in Resolve.