Question about upgrading JEvents

We are using JEvents 2.29 with RSVP Pr - yes, very old. We have lots of nice registration forms and made some customizations on how the forms display. Now, we can't edit or create new forms, and I suspect we will need to upgrade to do this. My question is ... will we lose our old forms? They are quite complex and we spent a lot of time creating them. One example:
[url]http://foundation2success.com/reflections-farm-clinics/event-calendar-reflections-farm/eventdetail/87/-/reflections-farm-dressage-versatility-2015-horse-show-series-vass-nc[/url]
Sincerely, Vicky Thomas

Joomla : 2.5.28

component_com_jevents : 2.2.8

component_com_jeventstags : 1.1.5

component_com_jevlocations : 2.0.16

component_com_rsvppro : 1.9.5

module_mod_jevents_cal : 2.2.8

module_mod_jevents_filter : 2.2.0

module_mod_jevents_latest : 2.2.0

module_mod_jevents_legend : 2.2.0

layout_smartphone : 1.0.5

plugin_content_jevent_embed : 1.2.0 (not enabled)

plugin_editors_jce : 2.4.6

plugin_jevents_agendaminutes : 1.2.8 (not enabled)

plugin_jevents_jevcustomfields : 1.3.5 (not enabled)

plugin_jevents_jevfacebook : 1.3.5

plugin_jevents_jevlocations : 2.0.19

plugin_jevents_jevrsvppro : 1.9.5

plugin_jevents_jevtags : 1.1.7

plugin_rsvppro_manual : 1.0.8

plugin_rsvppro_paypalipn : 1.1.1

plugin_search_eventsearch : 2.2.0