TestNG - Only Priorirty = 1 method is executed - selenium

Question

I have a testNG.xml file as below:
<suite name="example suite 1" >
<test name = "exampletest2" preserve-order="true" >
<classes>
<class name = "sprint0.class1" />
<class name = "sprint0.class2" />
</classes>
</test>
</suite>
each class has mutliple test methods where priority is set:
example:class1
public class class1 extends TestSetup {
#Test(priority = 1, dataProvider = "TerminateEmpData" , enabled = true )
public void test1class1 (String searchKey, String ChangedKey) {
/* code */
}
#Test(priority = 2, dataProvider = "TerminateEmpData" , enabled = true )
public void test2class1 (String searchKey, String ChangedKey) {
/* code */
}
#Test(priority = 3, dataProvider = "TerminateEmpData" , enabled = true )
public void test3class1 (String searchKey, String ChangedKey) {
/* code */
}
}
Another class2 as below:
public class class2 extends TestSetup {
#Test(priority = 1, dataProvider = "TerminateEmpData" , enabled = true )
public void test1class2 (String searchKey, String ChangedKey) {
/* code */
}
#Test(priority = 2, dataProvider = "TerminateEmpData" , enabled = true )
public void test2class2 (String searchKey, String ChangedKey) {
/* code */
}
}
After I run above testng.xml file, only method with Priority =1 is execueted.
I would like to understand what am i doing wrong here?
Also I would like to mention in TestSetup class,
**#BeforeMethod, I invoke the browser and login to the application
and
#AfterMethod, I do teardown and take screenshot for test failure.**
I would like to understand what am i doing wrong here as I am not able to get all my methods run.
An alternative which i created is to create a testsuite for individual class and then call all the test suits and run in seperate testng.xml which works fine.
Any suggestions?