I've the the following models related to a many-to-many relationship.   
(Django 1.9.4  and sqlite)

Each time I run makemigrations, it generates an AlterField migration, which 
migrate successfully executes (no errors), but running makemigrations again 
will generate the identical migration.

Everything seems to be functional, but it shouldn't be doing this.   

Any guidance on what is causing this and ow to resolve or workaround this?

Classes:
class BugbaseFilter(models.Model):
    AND = 'AND'
    OR = 'OR'
    NONE = 'NONE'
    ASSOC_TYPE = (
        (AND,"AND of all items"), 
        (OR,"OR of all items"), 
        (NONE,"Single Item")
    ) 
    filterName = models.CharField(max_length=50)
    association = 
models.CharField(max_length=4,choices=ASSOC_TYPE,default=AND)


class BugbaseFilterItem(models.Model):
    fieldName   = models.CharField(max_length=100)
    checkValue = models.CharField(max_length=100)
    invert = models.BooleanField(default=False)
    regex = models.BooleanField(default=False)
    bugFilter = models.ManyToManyField(BugbaseFilter, related_name='items', 
related_query_name='item')
    alias = models.CharField(max_length=25, blank=True)

Migration generated:
class Migration(migrations.Migration):

    dependencies = [
        ('BugReporter', '0027_bugbasefilteritem_bugfilter'),
    ]

    operations = [
        migrations.AlterField(
            model_name='bugbasefilteritem',
            name='bugFilter',
            field=models.ManyToManyField(related_name='items', 
related_query_name='item', to='BugReporter.BugbaseFilter'),
        ),
    ]

The Table that is in my database looks like the following
CREATE TABLE "BugReporter_bugbasefilteritem_bugFilter" ("id" integer NOT 
NULL PRIMARY KEY AUTOINCREMENT, "bugbasefilteritem_id" integer NOT NULL 
REFERENCES "BugReporter_bugbasefilteritem" ("id"), "bugbasefilter_id" 
integer NOT NULL REFERENCES "BugReporter_bugbasefilter" ("id"))


FYI... I've tried removing the related_name and related_query_item and 
doesn't make any difference.




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