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### Description

<!-- Explain what you did, what you expected to happen, and what actually happened.

--> ``` We are using the functions: replace_body("RTP/AVP 96 97 0 101 98", "RTP/AVP 101 96 97 0 98"); msg_apply_changes();

We expect it replace the 'RTP/AVP 96 97 0 101 98' for 'RTP/AVP 101 96 97 0 98'

And what kamailio does is append 'RTP/AVP 101 96 97 0 98' to the end of the SDP body. ``` #### Log Messages

<!-- We are not getting any error message -->

``` We are not getting any error message ```

### Possible Solutions

<!-- -->

```` We've got the opportunity to test on version 4.0.3 and it does the work properly. ```` ### Additional Information

* **Kamailio Version** - output of `kamailio -v`

``` version: kamailio 4.4.5 (x86_64/linux) flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: unknown compiled with gcc 4.9.2 ```

* **Operating System**:

``` Distributor ID: Debian Description: Debian GNU/Linux 8.7 (jessie) Release: 8.7 Codename: jessie

Linux devcomphe 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u2 (2016-10-19) x86_64 GNU/Linux

```