P2 ingested footage with wrong date created metadata

Question

Hello, we're trying to standarize all of the media for our systems. Part of this includes ingesting P2 footage using Prelude and encoding it as DVCHDPro quicktime files. I know that the recommended method that adobe gives for ingesting P2 footage is to keep the file structure in tact and use the media browser function of Premiere; this, however, doesn't suit our company's needs of maintaining a relativaly NLE-agnostic media library and having quicktime compatiable discrete video clips of all our media. We're using Mac OSX operating systems, by the way. 
The problem is that, when using Prelude to ingest, it seems that Prelude obliterates the "date created" metadata and file data (e.g. when selecting the "get info" on the clip itself; that file data). After ingesting a clip, if I open it in Premiere, there is no date-based metadata that matches the original record time on the .mxf file itself. Nor when I view the clip in OSX's "get info" does the "date created" panel reflect the date that the original file was created. It seems that it should be possible to write the original "date created" data to the ingested file (in the ingest panel in Prelude I can see the correct "date created" time); FCPX is able to do this when ingesting P2 media using their systems. Is there an option that I'm missing or is this simply not possible with this version of Prelude?
To illustrate: here's a screencap of the ingest panel in prelude, notice the "date created" column reads 2013-06-28T11:43:05; which is the correct record date of that clip:
However, after I ingest the clip, both within Premiere and the "get info" panel in OSX, the "date created" now refers only to my import time:

Answer 1

Thanks both for your responses. I checked the .mxf file "date created" and it is indeed empty (see picture).
The "date modified time" however, is correct. I do understand that when dragging media directly from the media browser in premiere that the metadata displays correctly; what I think should also happen is that when the footage is ingested and transcoded via Prelude, it should also display correct metadata. As shown in my pictures above, prelude does indeed see the correct "date created" (wherever it gets that information); it just obliterates it after it transcodes the clip; it's not available either in the "get info data" (which, somehow, FCPX does do when importing P2 media through their system) nor (most strangely) in premiere. Any settings or changes that could be made to address this would be appreciated.