Can i have test management tool named Xray while i have older one named Zephyr?

In my project, test cases located in Jira Zephyr. I have some troubles with Zephyr as you know ( lack of preconditions for test cases, native support for BDD ...). So I decided to switch test management tool to Xray.

I haven't found any solution to migration my test cases from Zephyr to Xray.

After that new issue is:

Is there any problem if i install Xray to Jira account while Zephyr is staying on?