Email Archiving issue.

One of my account is facing a strange error in email archiving. From disk usage we can see the emails are being archived and consume space of 74 GB approx. Now the issue is we are unable to access them via webmail as we have also subscribed the folder archive. No emails are being displayed. But when we visit mail folder and move to archive there are folders present. Can anyone help? Please find attached images from cPanel and below output from server.

Code:

(path/to/ielnet/mail/archive/iel.net.pk)$
75G     .
75G     ..
24K     .Archive
28K     .Drafts
28K     .incoming
32K     .incoming.2014-02-18
11M     .incoming.2014-02-19
31M     .incoming.2014-02-20
40M     .incoming.2014-02-21
2.4M    .incoming.2014-02-22
276K    .incoming.2014-02-23
23M     .incoming.2014-02-24
17M     .incoming.2014-02-25
24M     .incoming.2014-02-26
65M     .incoming.2014-02-27
103M    .incoming.2014-02-28
7.0M    .incoming.2014-03-01
5.2M    .incoming.2014-03-02
14M     .incoming.2014-03-03
60M     .incoming.2014-03-04
82M     .incoming.2014-03-05
29M     .incoming.2014-03-06
29M     .incoming.2014-03-07
11M     .incoming.2014-03-08
2.8M    .incoming.2014-03-09
25M     .incoming.2014-03-10
26M     .incoming.2014-03-11
17M     .incoming.2014-03-12
59M     .incoming.2014-03-13
32M     .incoming.2014-03-14
9.7M    .incoming.2014-03-15
628K    .incoming.2014-03-16
40M     .incoming.2014-03-17
65M     .incoming.2014-03-18
35M     .incoming.2014-03-19
26M     .incoming.2014-03-20
25M     .incoming.2014-03-21
32M     .incoming.2014-03-22
2.5M    .incoming.2014-03-23
36M     .incoming.2014-03-24
112M    .incoming.2014-03-25
28M     .incoming.2014-03-26